ArrayMath (MeteoInfoLib 1.8 API)

java.lang.Object
- org.meteoinfo.data.ArrayMath

```
public class ArrayMath
extends Object
```
作者:

wyq

字段概要

字段
限定符和类型字段说明

static double fill_value

字段
限定符和类型	字段	说明
`static double`	`fill_value`

构造器概要

构造器
构造器说明

ArrayMath()

构造器
构造器	说明
`ArrayMath()`

方法概要

所有方法静态方法具体方法
限定符和类型	方法	说明
`static ucar.ma2.Array`	`abs(ucar.ma2.Array a)`	Array absolute
`static ucar.ma2.Array`	`acos(ucar.ma2.Array a)`	Arc cosine function
`static ucar.ma2.Array`	`add(ucar.ma2.Array a, Number b)`	Array add
`static ucar.ma2.Array`	`add(ucar.ma2.Array a, Complex b)`	Array add
`static ucar.ma2.Array`	`add(ucar.ma2.Array a, org.python.core.PyComplex b)`	Array add
`static ucar.ma2.Array`	`add(ucar.ma2.Array a, ucar.ma2.Array b)`	Array add
`static boolean`	`all(ucar.ma2.Array a)`	Test whether all array element evaluates to True.
`static ucar.ma2.Array`	`all(ucar.ma2.Array a, int axis)`	Test whether all array element along a given axis evaluates to True.
`static boolean`	`any(ucar.ma2.Array a)`	Test whether any array element evaluates to True.
`static ucar.ma2.Array`	`any(ucar.ma2.Array a, int axis)`	Test whether any array element along a given axis evaluates to True.
`static int`	`argMax(ucar.ma2.Array a)`	Get the index of the maximum value into the flattened array.
`static ucar.ma2.Array`	`argMax(ucar.ma2.Array a, int axis)`	Get the indices of the maximum values along an axis.
`static int`	`argMin(ucar.ma2.Array a)`	Get the index of the minimum value into the flattened array.
`static ucar.ma2.Array`	`argMin(ucar.ma2.Array a, int axis)`	Get the indices of the minimum values along an axis.
`static ucar.ma2.Array`	`asin(ucar.ma2.Array a)`	Arc sine function
`static List<Object>`	`asList(ucar.ma2.Array a)`	As number list
`static ucar.ma2.Array`	`atan(ucar.ma2.Array a)`	Arc tangen function
`static ucar.ma2.Array`	`atan2(ucar.ma2.Array a, ucar.ma2.Array b)`	Arc tangen function
`static double`	`aveDouble(ucar.ma2.Array a)`	Average array
`static double`	`aveDouble(ucar.ma2.Array a, double missingValue)`	Average array skip missing value
`static ucar.ma2.Array`	`bitAnd(ucar.ma2.Array a, Number b)`	Bit and operation
`static ucar.ma2.Array`	`bitAnd(ucar.ma2.Array a, ucar.ma2.Array b)`	Bit and operation
`static ucar.ma2.Array`	`bitInvert(ucar.ma2.Array a)`	Bit inversion ~ operation
`static ucar.ma2.Array`	`bitOr(ucar.ma2.Array a, Number b)`	Bit or \| operation
`static ucar.ma2.Array`	`bitOr(ucar.ma2.Array a, ucar.ma2.Array b)`	Bit or \| operation
`static ucar.ma2.Array`	`bitXor(ucar.ma2.Array a, Number b)`	Bit exclusive or ^ operation
`static ucar.ma2.Array`	`bitXor(ucar.ma2.Array a, ucar.ma2.Array b)`	Bit exclusive or \| operation
`static int[]`	`broadcast(ucar.ma2.Array a, ucar.ma2.Array b)`	Get broadcast shape from two arrays
`static int`	`broadcastCheck(ucar.ma2.Array a, ucar.ma2.Array b)`	Broadcast check for two arrays.
`static double[]`	`cartesianToPolar(double x, double y)`	Convert cartesian to polar coordinate
`static ucar.ma2.Array[]`	`cartesianToPolar(ucar.ma2.Array x, ucar.ma2.Array y)`	Convert cartesian to polar coordinate
`static ucar.ma2.Array`	`cdiff(ucar.ma2.Array data, int dimIdx)`	Performs a centered difference operation on a grid data along one dimension direction
`static ucar.ma2.Array`	`cdiff_bak(ucar.ma2.Array data, boolean isX)`	Performs a centered difference operation on a grid data in the x or y direction
`static boolean`	`containsNaN(ucar.ma2.Array a)`	Check if the array contains NaN value
`static ucar.ma2.Array`	`copy(ucar.ma2.Array a)`	Copy array
`static ucar.ma2.Array`	`cos(ucar.ma2.Array a)`	Cosine function
`static ucar.ma2.Array`	`div(Number b, ucar.ma2.Array a)`	Array divide
`static ucar.ma2.Array`	`div(Complex b, ucar.ma2.Array a)`	Array divide
`static ucar.ma2.Array`	`div(org.python.core.PyComplex b, ucar.ma2.Array a)`	Array divide
`static ucar.ma2.Array`	`div(ucar.ma2.Array a, Number b)`	Array divide
`static ucar.ma2.Array`	`div(ucar.ma2.Array a, Complex b)`	Array divide
`static ucar.ma2.Array`	`div(ucar.ma2.Array a, org.python.core.PyComplex b)`	Array divide
`static ucar.ma2.Array`	`div(ucar.ma2.Array a, ucar.ma2.Array b)`	Array divide
`static ucar.ma2.Array`	`dot(ucar.ma2.Array a, ucar.ma2.Array b)`	Matrix multiplication
`static double[]`	`ds2uv(double windDir, double windSpeed)`	Get wind U/V components from wind direction and speed
`static ucar.ma2.Array[]`	`ds2uv(ucar.ma2.Array windDir, ucar.ma2.Array windSpeed)`	Get wind U/V components from wind direction and speed
`static ucar.ma2.Array`	`equal(ucar.ma2.Array a, Number b)`	Array equal
`static ucar.ma2.Array`	`equal(ucar.ma2.Array a, ucar.ma2.Array b)`	Array equal
`static ucar.ma2.Array`	`exp(ucar.ma2.Array a)`	Exponent function
`static ucar.ma2.Array`	`flip(ucar.ma2.Array a, int idx)`	Flip array
`static ucar.ma2.Array`	`flip(ucar.ma2.Array a, List<Integer> idxs)`	Flip array
`static ucar.ma2.Array`	`fmax(ucar.ma2.Array x1, ucar.ma2.Array x2)`	Element-wise maximum of array elements, ignores NaNs.
`static ucar.ma2.Array`	`fmin(ucar.ma2.Array x1, ucar.ma2.Array x2)`	Element-wise minimum of array elements, ignores NaNs.
`static ucar.ma2.DataType`	`getDataType(Object o)`	Get data type
`static double`	`getMaximum(ucar.ma2.Array a)`	Get maximum value
`static double`	`getMaximum(ucar.ma2.Array a, double missingv)`	Get maximum value
`static double`	`getMinimum(ucar.ma2.Array a)`	Get minimum value
`static double`	`getMinimum(ucar.ma2.Array a, double missingv)`	Get minimum value
`static float`	`getR(List<Number> xData, List<Number> yData)`	Get correlation coefficient How well did the forecast values correspond to the observed values?
`static float`	`getR(ucar.ma2.Array xData, ucar.ma2.Array yData)`	Get correlation coefficient How well did the forecast values correspond to the observed values?
`static ucar.ma2.Array`	`greaterThan(ucar.ma2.Array a, Number b)`	Array greater than
`static ucar.ma2.Array`	`greaterThan(ucar.ma2.Array a, ucar.ma2.Array b)`	Array greater than
`static ucar.ma2.Array`	`greaterThanOrEqual(ucar.ma2.Array a, Number b)`	Array greater than or equal
`static ucar.ma2.Array`	`greaterThanOrEqual(ucar.ma2.Array a, ucar.ma2.Array b)`	Array greater than or equal
`static ucar.ma2.Array`	`hcurl(ucar.ma2.Array uData, ucar.ma2.Array vData, List<Number> xx, List<Number> yy)`	Calculates the vertical component of the curl (ie, vorticity)
`static ucar.ma2.Array`	`hdivg(ucar.ma2.Array uData, ucar.ma2.Array vData, List<Number> xx, List<Number> yy)`	Calculates the horizontal divergence using finite differencing
`static ucar.ma2.Array`	`height2Press(ucar.ma2.Array height)`	Calculate pressure from height
`static ucar.ma2.Array`	`inPolygon(ucar.ma2.Array a, List<Number> x, List<Number> y, List<Number> x_p, List<Number> y_p)`	In polygon function
`static ucar.ma2.Array`	`inPolygon(ucar.ma2.Array a, List<Number> x, List<Number> y, List<PolygonShape> polygons)`	In polygon function
`static ucar.ma2.Array`	`inPolygon(ucar.ma2.Array a, List<Number> x, List<Number> y, VectorLayer layer)`	In polygon function
`static ucar.ma2.Array`	`inPolygon(ucar.ma2.Array a, List<Number> x, List<Number> y, PolygonShape ps)`	In polygon function
`static ucar.ma2.Array`	`inPolygon(ucar.ma2.Array x, ucar.ma2.Array y, List<PolygonShape> polygons)`	In polygon function
`static ucar.ma2.Array`	`inPolygon(ucar.ma2.Array x, ucar.ma2.Array y, ucar.ma2.Array x_p, ucar.ma2.Array y_p)`	In polygon function
`static ucar.ma2.Array`	`inValues(ucar.ma2.Array a, List b)`	Return the array with the value of 1 when the input array element value in the list b, otherwise set value as 0.
`static boolean`	`isComplex(ucar.ma2.Array a)`	Check if an array is complex data type
`static boolean`	`isNumeric(ucar.ma2.Array a)`	Check if an array is numeric array
`static ucar.ma2.Array`	`join(ucar.ma2.Array a, ucar.ma2.Array b, int dim)`	Join two arrays by a dimension
`static double[]`	`leastSquareTrend(List<Number> xData, List<Number> yData)`	Determine the least square trend equation - linear fitting
`static ucar.ma2.Array`	`leftShift(ucar.ma2.Array a, Number b)`	Bit left shift operation
`static ucar.ma2.Array`	`leftShift(ucar.ma2.Array a, ucar.ma2.Array b)`	Bit left shift operation
`static ucar.ma2.Array`	`lessThan(ucar.ma2.Array a, Number b)`	Array less than
`static ucar.ma2.Array`	`lessThan(ucar.ma2.Array a, ucar.ma2.Array b)`	Array less than
`static ucar.ma2.Array`	`lessThanOrEqual(ucar.ma2.Array a, Number b)`	Array less than or equal
`static ucar.ma2.Array`	`lessThanOrEqual(ucar.ma2.Array a, ucar.ma2.Array b)`	Array less than or equal
`static double[]`	`lineRegress(List<Number> xData, List<Number> yData)`	Linear regress
`static double[]`	`lineRegress(ucar.ma2.Array xData, ucar.ma2.Array yData)`	Linear regress
`static ucar.ma2.Array`	`log(ucar.ma2.Array a)`	Log function
`static ucar.ma2.Array`	`log10(ucar.ma2.Array a)`	Log10 function
`static ucar.ma2.Array`	`magnitude(ucar.ma2.Array uData, ucar.ma2.Array vData)`	Take magnitude value from U/V grid data
`static ucar.ma2.Array`	`maskin(ucar.ma2.Array a, ucar.ma2.Array m)`	Maskin function
`static ucar.ma2.Array`	`maskin(ucar.ma2.Array a, ucar.ma2.Array x, ucar.ma2.Array y, List<PolygonShape> polygons)`	Maskin function
`static ucar.ma2.Array[]`	`maskin_Remove(ucar.ma2.Array a, ucar.ma2.Array x, ucar.ma2.Array y, List<PolygonShape> polygons)`	Maskin function
`static ucar.ma2.Array`	`maskout(ucar.ma2.Array a, List<Number> x, List<Number> y, List<PolygonShape> polygons)`	Maskout function
`static ucar.ma2.Array`	`maskout(ucar.ma2.Array a, List<Number> x, List<Number> y, List<PolygonShape> polygons, Number missingValue)`	Maskout function
`static ucar.ma2.Array`	`maskout(ucar.ma2.Array a, List<Number> x, List<Number> y, VectorLayer layer, Number missingValue)`	Maskout function
`static ucar.ma2.Array`	`maskout(ucar.ma2.Array a, List<Number> x, List<Number> y, PolygonShape polygon, Number missingValue)`	Maskout function
`static ucar.ma2.Array`	`maskout(ucar.ma2.Array a, ucar.ma2.Array m)`	Maskout function
`static ucar.ma2.Array`	`maskout(ucar.ma2.Array a, ucar.ma2.Array m, Number missingValue)`	Maskout function
`static ucar.ma2.Array`	`maskout(ucar.ma2.Array a, ucar.ma2.Array x, ucar.ma2.Array y, List<PolygonShape> polygons)`	Maskout function
`static ucar.ma2.Array[]`	`maskout_Remove(ucar.ma2.Array a, ucar.ma2.Array x, ucar.ma2.Array y, List<PolygonShape> polygons)`	Maskout function
`static double`	`max(ucar.ma2.Array a)`	Compute maximum value of an array
`static ucar.ma2.Array`	`max(ucar.ma2.Array a, int axis)`	Compute maximum value of an array along an axis (dimension)
`static double`	`max(ucar.ma2.Array a, List<ucar.ma2.Range> ranges)`	Compute maximum value of an array
`static ucar.ma2.Array`	`maximum(ucar.ma2.Array x1, ucar.ma2.Array x2)`	Element-wise maximum of array elements.
`static ucar.ma2.Array`	`mean(List<ucar.ma2.Array> alist)`	Compute the arithmetic mean arry from a list of arrays
`static double`	`mean(ucar.ma2.Array a)`	Compute mean value of an array
`static ucar.ma2.Array`	`mean(ucar.ma2.Array a, int axis)`	Compute mean value of an array along an axis (dimension)
`static double`	`mean(ucar.ma2.Array a, List<ucar.ma2.Range> ranges)`	Compute mean value of an array
`static double`	`median(ucar.ma2.Array a)`	Compute median value of an array
`static ucar.ma2.Array`	`median(ucar.ma2.Array a, int axis)`	Compute median value of an array along an axis (dimension)
`static double`	`median(ucar.ma2.Array a, List<ucar.ma2.Range> ranges)`	Compute median value of an array
`static double`	`min(ucar.ma2.Array a)`	Compute minimum value of an array
`static ucar.ma2.Array`	`min(ucar.ma2.Array a, int axis)`	Compute minimum value of an array along an axis (dimension)
`static double`	`min(ucar.ma2.Array a, List<ucar.ma2.Range> ranges)`	Compute minimum value of an array
`static ucar.ma2.Array`	`minimum(ucar.ma2.Array x1, ucar.ma2.Array x2)`	Element-wise minimum of array elements.
`static void`	`missingToNaN(ucar.ma2.Array a, Number missingv)`	Set missing value to NaN
`static ucar.ma2.Array`	`mul(ucar.ma2.Array a, Number b)`	Array multiply
`static ucar.ma2.Array`	`mul(ucar.ma2.Array a, Complex b)`	Array multiply
`static ucar.ma2.Array`	`mul(ucar.ma2.Array a, org.python.core.PyComplex b)`	Array multiply
`static ucar.ma2.Array`	`mul(ucar.ma2.Array a, ucar.ma2.Array b)`	Array mutiply
`static List<ucar.ma2.Array>`	`nonzero(ucar.ma2.Array a)`	Return the indices of the elements that are non-zero.
`static ucar.ma2.Array`	`notEqual(ucar.ma2.Array a, Number b)`	Array not equal
`static ucar.ma2.Array`	`notEqual(ucar.ma2.Array a, ucar.ma2.Array b)`	Array not equal
`static double[]`	`polarToCartesian(double B, double r)`	Convert poar to cartesian coordinate
`static ucar.ma2.Array[]`	`polarToCartesian(ucar.ma2.Array B, ucar.ma2.Array r)`	Convert poar to cartesian coordinate
`static ucar.ma2.Array`	`polyVal(List<Number> p, ucar.ma2.Array x)`	Evaluate a polynomial at specific values.
`static ucar.ma2.Array`	`pow(Number a, ucar.ma2.Array b)`	Array pow function
`static ucar.ma2.Array`	`pow(Complex b, ucar.ma2.Array a)`	Array pow function
`static ucar.ma2.Array`	`pow(org.python.core.PyComplex b, ucar.ma2.Array a)`	Array pow function
`static ucar.ma2.Array`	`pow(ucar.ma2.Array a, Number b)`	Array pow function
`static ucar.ma2.Array`	`pow(ucar.ma2.Array a, Complex b)`	Array pow function
`static ucar.ma2.Array`	`pow(ucar.ma2.Array a, org.python.core.PyComplex b)`	Array pow function
`static ucar.ma2.Array`	`pow(ucar.ma2.Array a, ucar.ma2.Array b)`	Array pow function
`static ucar.ma2.Array`	`press2Height(ucar.ma2.Array press)`	Calculate height from pressure
`static double`	`prodDouble(ucar.ma2.Array a)`	Produce array
`static ucar.ma2.Array`	`qair2rh(ucar.ma2.Array qair, ucar.ma2.Array temp, double press)`	Calculate relative humidity from specific humidity
`static ucar.ma2.Array`	`qair2rh(ucar.ma2.Array qair, ucar.ma2.Array temp, ucar.ma2.Array press)`	Calculate relative humidity
`static ucar.ma2.Array`	`removeNaN(ucar.ma2.Array a)`	Remove NaN values in an array
`static ucar.ma2.Array[]`	`removeNaN(ucar.ma2.Array... a)`	Remove NaN values in arrays
`static ucar.ma2.Array`	`rightShift(ucar.ma2.Array a, Number b)`	Bit right shift operation
`static ucar.ma2.Array`	`rightShift(ucar.ma2.Array a, ucar.ma2.Array b)`	Bit right shift operation
`static ucar.ma2.Array`	`rolling_mean(ucar.ma2.Array x, int window, boolean center)`	Moving average function
`static ucar.ma2.Array`	`rot90(ucar.ma2.Array a, int k)`	Rotate an array by 90 degrees in counter-clockwise direction.
`static ucar.ma2.Array`	`section(ucar.ma2.Array a, int[] origin, int[] size, int[] stride)`	Section array
`static ucar.ma2.Array`	`section(ucar.ma2.Array a, List<ucar.ma2.Range> ranges)`	Section array
`static ucar.ma2.Array`	`setSection(ucar.ma2.Array a, List<ucar.ma2.Range> ranges, Number v)`	Set section
`static ucar.ma2.Array`	`setSection(ucar.ma2.Array a, List<ucar.ma2.Range> ranges, ucar.ma2.Array v)`	Set section
`static ucar.ma2.Array`	`setSection_List(ucar.ma2.Array a, List<List<Integer>> ranges, Number v)`	Set section
`static ucar.ma2.Array`	`setSection_List(ucar.ma2.Array a, List<List<Integer>> ranges, ucar.ma2.Array v)`	Set section
`static ucar.ma2.Array`	`setSection_Mix(ucar.ma2.Array a, List<Object> ranges, Number v)`	Set section
`static ucar.ma2.Array`	`setSection_Mix(ucar.ma2.Array a, List<Object> ranges, ucar.ma2.Array v)`	Set section
`static void`	`setValue(ucar.ma2.Array a, ucar.ma2.Array b, Number value)`	Set value
`static void`	`setValue(ucar.ma2.Array a, ucar.ma2.Array b, ucar.ma2.Array value)`	Set value
`static ucar.ma2.Array`	`sign(ucar.ma2.Array x)`	Returns an element-wise indication of the sign of a number.
`static ucar.ma2.Array`	`sin(ucar.ma2.Array a)`	Sine function
`static ucar.ma2.Array`	`sqrt(ucar.ma2.Array a)`	Sqrt function
`static double`	`std(ucar.ma2.Array a)`	Compute standard deviation value of an array
`static ucar.ma2.Array`	`std(ucar.ma2.Array a, int axis)`	Compute standard deviation value of an array along an axis (dimension)
`static double`	`std(ucar.ma2.Array a, List<ucar.ma2.Range> ranges)`	Compute standard deviation value of an array
`static ucar.ma2.Array`	`sub(Number b, ucar.ma2.Array a)`	Array subtract
`static ucar.ma2.Array`	`sub(Complex b, ucar.ma2.Array a)`	Array subtract
`static ucar.ma2.Array`	`sub(org.python.core.PyComplex b, ucar.ma2.Array a)`	Array subtract
`static ucar.ma2.Array`	`sub(ucar.ma2.Array a, Number b)`	Array subtract
`static ucar.ma2.Array`	`sub(ucar.ma2.Array a, Complex b)`	Array subtract
`static ucar.ma2.Array`	`sub(ucar.ma2.Array a, org.python.core.PyComplex b)`	Array subtract
`static ucar.ma2.Array`	`sub(ucar.ma2.Array a, ucar.ma2.Array b)`	Array subtract
`static ucar.ma2.Array`	`sum(List<ucar.ma2.Array> alist)`	Compute the sum arry from a list of arrays
`static double`	`sum(ucar.ma2.Array a)`	Summarize array
`static double`	`sum(ucar.ma2.Array a, double missingValue)`	Summarize array skip missing value
`static ucar.ma2.Array`	`sum(ucar.ma2.Array a, int axis)`	Compute sum value of an array along an axis (dimension)
`static double`	`sum(ucar.ma2.Array a, List<ucar.ma2.Range> ranges)`	Compute sum value of an array
`static ucar.ma2.Array`	`take(ucar.ma2.Array a, List<Object> ranges)`	Take elements from an array along an axis.
`static ucar.ma2.Array`	`takeValues(ucar.ma2.Array a, List<List<Integer>> ranges)`	Take elements from an array.
`static ucar.ma2.Array`	`tan(ucar.ma2.Array a)`	Tangent function
`static ucar.ma2.Array`	`tc2tf(ucar.ma2.Array tc)`	Calculate fahrenheit temperature from celsius temperature
`static ucar.ma2.Array`	`tf2tc(ucar.ma2.Array tf)`	Calculate celsius temperature from fahrenheit temperature
`static ucar.ma2.Array`	`toDegrees(ucar.ma2.Array a)`	Convert radians to degrees function
`static ucar.ma2.Array`	`toRadians(ucar.ma2.Array a)`	Convert radians to degrees function
`static ucar.ma2.Array`	`transpose(ucar.ma2.Array a, int dim1, int dim2)`	Transpose array
`static double`	`trapz(ucar.ma2.Array y, double dx)`	Integrate vector array using the composite trapezoidal rule.
`static ucar.ma2.Array`	`trapz(ucar.ma2.Array a, double dx, int axis)`	Integrate vector array using the composite trapezoidal rule.
`static double`	`trapz(ucar.ma2.Array y, double dx, List<ucar.ma2.Range> ranges)`	Integrate vector array using the composite trapezoidal rule.
`static double`	`trapz(ucar.ma2.Array y, ucar.ma2.Array x)`	Integrate vector array using the composite trapezoidal rule.
`static ucar.ma2.Array`	`trapz(ucar.ma2.Array a, ucar.ma2.Array x, int axis)`	Integrate vector array using the composite trapezoidal rule.
`static double`	`trapz(ucar.ma2.Array y, ucar.ma2.Array x, List<ucar.ma2.Range> ranges)`	Integrate vector array using the composite trapezoidal rule.
`static short`	`typeToNBytes(ucar.ma2.DataType dataType)`	Return the number of bytes per element for the given typecode.
`static double[]`	`uv2ds(double u, double v)`	Get wind direction and wind speed from U/V
`static ucar.ma2.Array[]`	`uv2ds(ucar.ma2.Array u, ucar.ma2.Array v)`	Get wind direction and wind speed from U/V
`static ucar.ma2.Array`	`var(ucar.ma2.Array a, int axis)`	Compute variance value of an array along an axis (dimension)
`static double`	`var(ucar.ma2.Array a, List<ucar.ma2.Range> ranges)`	Compute variance value of an array
`static double`	`vdot(ucar.ma2.Array a, ucar.ma2.Array b)`	Return the dot product of two vectors.

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

字段详细资料
- fill_value
```
public static double fill_value
```

构造器详细资料
- ArrayMath
```
public ArrayMath()
```

方法详细资料

getDataType

public static ucar.ma2.DataType getDataType(Object o)

Get data type

参数:: o - Object
返回:: Data type

typeToNBytes
```
public static short typeToNBytes(ucar.ma2.DataType dataType)
```
Return the number of bytes per element for the given typecode.

参数:

dataType - Data type

返回:

Bytes number

isComplex
```
public static boolean isComplex(ucar.ma2.Array a)
```
Check if an array is complex data type

参数:

a - The array

返回:

Complex data type or not

isNumeric
```
public static boolean isNumeric(ucar.ma2.Array a)
```
Check if an array is numeric array

参数:

a - The array

返回:

Numeric or not

broadcastCheck
```
public static int broadcastCheck(ucar.ma2.Array a,
                                 ucar.ma2.Array b)
```
Broadcast check for two arrays.

参数:

a - Array a

b - Array b

返回:

Can broadcast (1), can not broadcast (-1), same dimensions (0)

broadcast

public static int[] broadcast(ucar.ma2.Array a,
                              ucar.ma2.Array b)

Get broadcast shape from two arrays

参数:: a - Array a; b - Array b
返回:: Broadcast shape

add

public static ucar.ma2.Array add(ucar.ma2.Array a,
                                 ucar.ma2.Array b)

Array add

参数:: a - Array a; b - Array b
返回:: Added array

add

public static ucar.ma2.Array add(ucar.ma2.Array a,
                                 Number b)

Array add

参数:: a - Array a; b - Number b
返回:: Added array

add

public static ucar.ma2.Array add(ucar.ma2.Array a,
                                 Complex b)

Array add

参数:: a - Array a; b - Complex number b
返回:: Added array

add

public static ucar.ma2.Array add(ucar.ma2.Array a,
                                 org.python.core.PyComplex b)

Array add

参数:: a - Array a; b - Complex number b
返回:: Added array

sub

public static ucar.ma2.Array sub(ucar.ma2.Array a,
                                 ucar.ma2.Array b)

Array subtract

参数:: a - Array a; b - Array b
返回:: Result array

sub

public static ucar.ma2.Array sub(ucar.ma2.Array a,
                                 Number b)

Array subtract

参数:: a - Array a; b - Number b
返回:: Result array

sub

public static ucar.ma2.Array sub(ucar.ma2.Array a,
                                 Complex b)

Array subtract

参数:: a - Array a; b - Complex number b
返回:: Result array

sub

public static ucar.ma2.Array sub(ucar.ma2.Array a,
                                 org.python.core.PyComplex b)

Array subtract

参数:: a - Array a; b - Complex number b
返回:: Result array

sub

public static ucar.ma2.Array sub(Number b,
                                 ucar.ma2.Array a)

Array subtract

参数:: a - Array a; b - Number b
返回:: Result array

sub

public static ucar.ma2.Array sub(Complex b,
                                 ucar.ma2.Array a)

Array subtract

参数:: a - Array a; b - Complex number b
返回:: Result array

sub

public static ucar.ma2.Array sub(org.python.core.PyComplex b,
                                 ucar.ma2.Array a)

Array subtract

参数:: a - Array a; b - Complex number b
返回:: Result array

mul

public static ucar.ma2.Array mul(ucar.ma2.Array a,
                                 ucar.ma2.Array b)

Array mutiply

参数:: a - Array a; b - Array b
返回:: Result array

mul

public static ucar.ma2.Array mul(ucar.ma2.Array a,
                                 Number b)

Array multiply

参数:: a - Array a; b - Number b
返回:: Result array

mul

public static ucar.ma2.Array mul(ucar.ma2.Array a,
                                 Complex b)

Array multiply

参数:: a - Array a; b - Complex number b
返回:: Result array

mul

public static ucar.ma2.Array mul(ucar.ma2.Array a,
                                 org.python.core.PyComplex b)

Array multiply

参数:: a - Array a; b - Complex number b
返回:: Result array

div

public static ucar.ma2.Array div(ucar.ma2.Array a,
                                 ucar.ma2.Array b)

Array divide

参数:: a - Array a; b - Array b
返回:: Result array

div

public static ucar.ma2.Array div(ucar.ma2.Array a,
                                 Number b)

Array divide

参数:: a - Array a; b - Number b
返回:: Result array

div

public static ucar.ma2.Array div(ucar.ma2.Array a,
                                 Complex b)

Array divide

参数:: a - Array a; b - Complex number b
返回:: Result array

div

public static ucar.ma2.Array div(ucar.ma2.Array a,
                                 org.python.core.PyComplex b)

Array divide

参数:: a - Array a; b - Complex number b
返回:: Result array

div

public static ucar.ma2.Array div(Number b,
                                 ucar.ma2.Array a)

Array divide

参数:: a - Array a; b - Number b
返回:: Result array

div

public static ucar.ma2.Array div(Complex b,
                                 ucar.ma2.Array a)

Array divide

参数:: a - Array a; b - Complex number b
返回:: Result array

div

public static ucar.ma2.Array div(org.python.core.PyComplex b,
                                 ucar.ma2.Array a)

Array divide

参数:: a - Array a; b - Complex number b
返回:: Result array

pow

public static ucar.ma2.Array pow(ucar.ma2.Array a,
                                 Number b)

Array pow function

参数:: a - Array a; b - Number b
返回:: Result array

pow

public static ucar.ma2.Array pow(ucar.ma2.Array a,
                                 Complex b)

Array pow function

参数:: a - Array a; b - Complex number b
返回:: Result array

pow

public static ucar.ma2.Array pow(ucar.ma2.Array a,
                                 org.python.core.PyComplex b)

Array pow function

参数:: a - Array a; b - Complex number b
返回:: Result array

pow

public static ucar.ma2.Array pow(Number a,
                                 ucar.ma2.Array b)

Array pow function

参数:: a - Number a; b - Array b
返回:: Result array

pow

public static ucar.ma2.Array pow(Complex b,
                                 ucar.ma2.Array a)

Array pow function

参数:: a - Array a; b - Complex number b
返回:: Result array

pow

public static ucar.ma2.Array pow(org.python.core.PyComplex b,
                                 ucar.ma2.Array a)

Array pow function

参数:: a - Array a; b - Complex number b
返回:: Result array

pow

public static ucar.ma2.Array pow(ucar.ma2.Array a,
                                 ucar.ma2.Array b)

Array pow function

参数:: a - Number a; b - Array b
返回:: Result array

sqrt

public static ucar.ma2.Array sqrt(ucar.ma2.Array a)

Sqrt function

参数:: a - Array a
返回:: Result array

exp

public static ucar.ma2.Array exp(ucar.ma2.Array a)

Exponent function

参数:: a - Array a
返回:: Result array

log

public static ucar.ma2.Array log(ucar.ma2.Array a)

Log function

参数:: a - Array a
返回:: Result array

log10

public static ucar.ma2.Array log10(ucar.ma2.Array a)

Log10 function

参数:: a - Array a
返回:: Result array

abs

public static ucar.ma2.Array abs(ucar.ma2.Array a)

Array absolute

参数:: a - Array a
返回:: Result array

equal

public static ucar.ma2.Array equal(ucar.ma2.Array a,
                                   ucar.ma2.Array b)

Array equal

参数:: a - Array a; b - Array b
返回:: Result array

equal

public static ucar.ma2.Array equal(ucar.ma2.Array a,
                                   Number b)

Array equal

参数:: a - Array a; b - Number b
返回:: Result array

lessThan

public static ucar.ma2.Array lessThan(ucar.ma2.Array a,
                                      ucar.ma2.Array b)

Array less than

参数:: a - Array a; b - Array b
返回:: Result array

lessThan

public static ucar.ma2.Array lessThan(ucar.ma2.Array a,
                                      Number b)

Array less than

参数:: a - Array a; b - Number b
返回:: Result array

lessThanOrEqual

public static ucar.ma2.Array lessThanOrEqual(ucar.ma2.Array a,
                                             ucar.ma2.Array b)

Array less than or equal

参数:: a - Array a; b - Array b
返回:: Result array

lessThanOrEqual

public static ucar.ma2.Array lessThanOrEqual(ucar.ma2.Array a,
                                             Number b)

Array less than or equal

参数:: a - Array a; b - Number b
返回:: Result array

greaterThan

public static ucar.ma2.Array greaterThan(ucar.ma2.Array a,
                                         ucar.ma2.Array b)

Array greater than

参数:: a - Array a; b - Array b
返回:: Result array

greaterThan

public static ucar.ma2.Array greaterThan(ucar.ma2.Array a,
                                         Number b)

Array greater than

参数:: a - Array a; b - Number b
返回:: Result array

greaterThanOrEqual

public static ucar.ma2.Array greaterThanOrEqual(ucar.ma2.Array a,
                                                ucar.ma2.Array b)

Array greater than or equal

参数:: a - Array a; b - Array b
返回:: Result array

greaterThanOrEqual

public static ucar.ma2.Array greaterThanOrEqual(ucar.ma2.Array a,
                                                Number b)

Array greater than or equal

参数:: a - Array a; b - Number b
返回:: Result array

notEqual

public static ucar.ma2.Array notEqual(ucar.ma2.Array a,
                                      ucar.ma2.Array b)

Array not equal

参数:: a - Array a; b - Array b
返回:: Result array

notEqual

public static ucar.ma2.Array notEqual(ucar.ma2.Array a,
                                      Number b)

Array not equal

参数:: a - Array a; b - Number b
返回:: Result array

any
```
public static boolean any(ucar.ma2.Array a)
```
Test whether any array element evaluates to True.

参数:

a - The array

返回:

Boolean

any

public static ucar.ma2.Array any(ucar.ma2.Array a,
                                 int axis)
                          throws ucar.ma2.InvalidRangeException

Test whether any array element along a given axis evaluates to True.

参数:: a - Array a; axis - Axis
返回:: Boolean array
抛出:: ucar.ma2.InvalidRangeException

all
```
public static boolean all(ucar.ma2.Array a)
```
Test whether all array element evaluates to True.

参数:

a - The array

返回:

Boolean

all

public static ucar.ma2.Array all(ucar.ma2.Array a,
                                 int axis)
                          throws ucar.ma2.InvalidRangeException

Test whether all array element along a given axis evaluates to True.

参数:: a - Array a; axis - Axis
返回:: Boolean array
抛出:: ucar.ma2.InvalidRangeException

inValues
```
public static ucar.ma2.Array inValues(ucar.ma2.Array a,
                                      List b)
```
Return the array with the value of 1 when the input array element value in the list b, otherwise set value as 0.

参数:

a - Array a

b - List b

返回:

Result array

containsNaN
```
public static boolean containsNaN(ucar.ma2.Array a)
```
Check if the array contains NaN value

参数:

a - Input array

返回:

Boolean

removeNaN
```
public static ucar.ma2.Array removeNaN(ucar.ma2.Array a)
```
Remove NaN values in an array

参数:

a - The array

返回:

The array withou NaN values

removeNaN
```
public static ucar.ma2.Array[] removeNaN(ucar.ma2.Array... a)
```
Remove NaN values in arrays

参数:

a - The arrays

返回:

The array withou NaN values

nonzero
```
public static List<ucar.ma2.Array> nonzero(ucar.ma2.Array a)
```
Return the indices of the elements that are non-zero.

参数:

a - Input array

返回:

Indices

bitAnd

public static ucar.ma2.Array bitAnd(ucar.ma2.Array a,
                                    Number b)

Bit and operation

参数:: a - Array a; b - Number b
返回:: Result array

bitAnd

public static ucar.ma2.Array bitAnd(ucar.ma2.Array a,
                                    ucar.ma2.Array b)

Bit and operation

参数:: a - Array a; b - Array b
返回:: Result array

bitOr

public static ucar.ma2.Array bitOr(ucar.ma2.Array a,
                                   Number b)

Bit or | operation

参数:: a - Array a; b - Number b
返回:: Result array

bitOr

public static ucar.ma2.Array bitOr(ucar.ma2.Array a,
                                   ucar.ma2.Array b)

Bit or | operation

参数:: a - Array a; b - Array b
返回:: Result array

bitXor

public static ucar.ma2.Array bitXor(ucar.ma2.Array a,
                                    Number b)

Bit exclusive or ^ operation

参数:: a - Array a; b - Number b
返回:: Result array

bitXor

public static ucar.ma2.Array bitXor(ucar.ma2.Array a,
                                    ucar.ma2.Array b)

Bit exclusive or | operation

参数:: a - Array a; b - Array b
返回:: Result array

bitInvert
```
public static ucar.ma2.Array bitInvert(ucar.ma2.Array a)
```
Bit inversion ~ operation

参数:

a - Array a

返回:

Result array

leftShift

public static ucar.ma2.Array leftShift(ucar.ma2.Array a,
                                       Number b)

Bit left shift operation

参数:: a - Array a; b - Number b
返回:: Result array

leftShift

public static ucar.ma2.Array leftShift(ucar.ma2.Array a,
                                       ucar.ma2.Array b)

Bit left shift operation

参数:: a - Array a; b - Array b
返回:: Result array

rightShift

public static ucar.ma2.Array rightShift(ucar.ma2.Array a,
                                        Number b)

Bit right shift operation

参数:: a - Array a; b - Number b
返回:: Result array

rightShift

public static ucar.ma2.Array rightShift(ucar.ma2.Array a,
                                        ucar.ma2.Array b)

Bit right shift operation

参数:: a - Array a; b - Array b
返回:: Result array

trapz
```
public static double trapz(ucar.ma2.Array y,
                           double dx)
```
Integrate vector array using the composite trapezoidal rule.

参数:

y - Vecotr array

dx - Spacing between all y elements

返回:

Definite integral as approximated by trapezoidal rule

trapz

public static double trapz(ucar.ma2.Array y,
                           double dx,
                           List<ucar.ma2.Range> ranges)
                    throws ucar.ma2.InvalidRangeException

Integrate vector array using the composite trapezoidal rule.

参数:: y - Vecotr array; dx - Spacing between all y elements; ranges -
返回:: Definite integral as approximated by trapezoidal rule
抛出:: ucar.ma2.InvalidRangeException

trapz
```
public static double trapz(ucar.ma2.Array y,
                           ucar.ma2.Array x)
```
Integrate vector array using the composite trapezoidal rule.

参数:

y - Vecotr array

x - Spacing array between all y elements

返回:

Definite integral as approximated by trapezoidal rule

trapz

public static double trapz(ucar.ma2.Array y,
                           ucar.ma2.Array x,
                           List<ucar.ma2.Range> ranges)
                    throws ucar.ma2.InvalidRangeException

Integrate vector array using the composite trapezoidal rule.

参数:: y - Vecotr array; x - Spacing array between all y elements; ranges - Ranges
返回:: Definite integral as approximated by trapezoidal rule
抛出:: ucar.ma2.InvalidRangeException

trapz

public static ucar.ma2.Array trapz(ucar.ma2.Array a,
                                   double dx,
                                   int axis)
                            throws ucar.ma2.InvalidRangeException

Integrate vector array using the composite trapezoidal rule.

参数:: a - Array a; dx -; axis - Axis
返回:: Mean value array
抛出:: ucar.ma2.InvalidRangeException

trapz

public static ucar.ma2.Array trapz(ucar.ma2.Array a,
                                   ucar.ma2.Array x,
                                   int axis)
                            throws ucar.ma2.InvalidRangeException

Integrate vector array using the composite trapezoidal rule.

参数:: a - Array a; x - Array x; axis - Axis
返回:: Mean value array
抛出:: ucar.ma2.InvalidRangeException

sign
```
public static ucar.ma2.Array sign(ucar.ma2.Array x)
```
Returns an element-wise indication of the sign of a number. The sign function returns -1 if x less than 0, 0 if x==0, 1 if x bigger than 0. nan is returned for nan inputs.

参数:

x - Input array

返回:

The sign of x array

dot

public static ucar.ma2.Array dot(ucar.ma2.Array a,
                                 ucar.ma2.Array b)

Matrix multiplication

参数:: a - Array a; b - Array b
返回:: Result array

vdot

public static double vdot(ucar.ma2.Array a,
                          ucar.ma2.Array b)

Return the dot product of two vectors.

参数:: a - Vector a; b - Vector b
返回:: Result

toDegrees
```
public static ucar.ma2.Array toDegrees(ucar.ma2.Array a)
```
Convert radians to degrees function

参数:

a - Array a

返回:

Result array

toRadians
```
public static ucar.ma2.Array toRadians(ucar.ma2.Array a)
```
Convert radians to degrees function

参数:

a - Array a

返回:

Result array

sin

public static ucar.ma2.Array sin(ucar.ma2.Array a)

Sine function

参数:: a - Array a
返回:: Result array

cos

public static ucar.ma2.Array cos(ucar.ma2.Array a)

Cosine function

参数:: a - Array a
返回:: Result array

tan

public static ucar.ma2.Array tan(ucar.ma2.Array a)

Tangent function

参数:: a - Array a
返回:: Result array

asin

public static ucar.ma2.Array asin(ucar.ma2.Array a)

Arc sine function

参数:: a - Array a
返回:: Result array

acos
```
public static ucar.ma2.Array acos(ucar.ma2.Array a)
```
Arc cosine function

参数:

a - Array a

返回:

Result array

atan
```
public static ucar.ma2.Array atan(ucar.ma2.Array a)
```
Arc tangen function

参数:

a - Array a

返回:

Result array

atan2

public static ucar.ma2.Array atan2(ucar.ma2.Array a,
                                   ucar.ma2.Array b)

Arc tangen function

参数:: a - Array a; b - Array b
返回:: Result array

cartesianToPolar

public static ucar.ma2.Array[] cartesianToPolar(ucar.ma2.Array x,
                                                ucar.ma2.Array y)

Convert cartesian to polar coordinate

参数:: x - X array; y - Y array
返回:: Angle and radius

polarToCartesian

public static ucar.ma2.Array[] polarToCartesian(ucar.ma2.Array B,
                                                ucar.ma2.Array r)

Convert poar to cartesian coordinate

参数:: r - Radius; B - Angle in radians
返回:: X and y in cartesian coordinate

cartesianToPolar

public static double[] cartesianToPolar(double x,
                                        double y)

Convert cartesian to polar coordinate

参数:: x - X; y - Y
返回:: Angle and radius

polarToCartesian
```
public static double[] polarToCartesian(double B,
                                        double r)
```
Convert poar to cartesian coordinate

参数:

r - Radius

B - Angle in radians

返回:

X and y in cartesian coordinate

copy

public static ucar.ma2.Array copy(ucar.ma2.Array a)

Copy array

参数:: a - Input array
返回:: Copied array

section

public static ucar.ma2.Array section(ucar.ma2.Array a,
                                     int[] origin,
                                     int[] size,
                                     int[] stride)
                              throws ucar.ma2.InvalidRangeException

Section array

参数:: a - Array a; origin - Origin array; size - Size array; stride - Stride array
返回:: Result array
抛出:: ucar.ma2.InvalidRangeException

section

public static ucar.ma2.Array section(ucar.ma2.Array a,
                                     List<ucar.ma2.Range> ranges)
                              throws ucar.ma2.InvalidRangeException

Section array

参数:: a - Array a; ranges - Ranges
返回:: Result array
抛出:: ucar.ma2.InvalidRangeException

take
```
public static ucar.ma2.Array take(ucar.ma2.Array a,
                                  List<Object> ranges)
```
Take elements from an array along an axis.

参数:

a - The array

ranges - The indices of the values to extract.

返回:

The returned array has the same type as a.

takeValues

public static ucar.ma2.Array takeValues(ucar.ma2.Array a,
                                        List<List<Integer>> ranges)

Take elements from an array.

参数:: a - The array; ranges - The indices of the values to extract.
返回:: The returned array has the same type as a.

setSection

public static ucar.ma2.Array setSection(ucar.ma2.Array a,
                                        List<ucar.ma2.Range> ranges,
                                        Number v)
                                 throws ucar.ma2.InvalidRangeException

Set section

参数:: a - Array a; ranges - Ranges; v - Number value
返回:: Result array
抛出:: ucar.ma2.InvalidRangeException

setSection

public static ucar.ma2.Array setSection(ucar.ma2.Array a,
                                        List<ucar.ma2.Range> ranges,
                                        ucar.ma2.Array v)
                                 throws ucar.ma2.InvalidRangeException

Set section

参数:: a - Array a; ranges - Ranges; v - Array value
返回:: Result array
抛出:: ucar.ma2.InvalidRangeException

setSection_Mix

public static ucar.ma2.Array setSection_Mix(ucar.ma2.Array a,
                                            List<Object> ranges,
                                            Number v)

Set section

参数:: a - Array a; ranges - Ranges; v - Number value
返回:: Result array

setSection_Mix

public static ucar.ma2.Array setSection_Mix(ucar.ma2.Array a,
                                            List<Object> ranges,
                                            ucar.ma2.Array v)

Set section

参数:: a - Array a; ranges - Ranges; v - Array value
返回:: Result array

setSection_List

public static ucar.ma2.Array setSection_List(ucar.ma2.Array a,
                                             List<List<Integer>> ranges,
                                             Number v)

Set section

参数:: a - Array a; ranges - Ranges; v - Number value
返回:: Result array

setSection_List

public static ucar.ma2.Array setSection_List(ucar.ma2.Array a,
                                             List<List<Integer>> ranges,
                                             ucar.ma2.Array v)

Set section

参数:: a - Array a; ranges - Ranges; v - Array value
返回:: Result array

flip

public static ucar.ma2.Array flip(ucar.ma2.Array a,
                                  List<Integer> idxs)

Flip array

参数:: a - Array a; idxs - Dimension index list
返回:: Result array

flip

public static ucar.ma2.Array flip(ucar.ma2.Array a,
                                  int idx)

Flip array

参数:: a - Array a; idx - Dimension idex
返回:: Result array

transpose

public static ucar.ma2.Array transpose(ucar.ma2.Array a,
                                       int dim1,
                                       int dim2)

Transpose array

参数:: a - Array a; dim1 - Dimension index 1; dim2 - Dimension index 2
返回:: Result array

rot90
```
public static ucar.ma2.Array rot90(ucar.ma2.Array a,
                                   int k)
```
Rotate an array by 90 degrees in counter-clockwise direction.

参数:

a - The array

k - Rotate times

返回:

Rotated array

join

public static ucar.ma2.Array join(ucar.ma2.Array a,
                                  ucar.ma2.Array b,
                                  int dim)

Join two arrays by a dimension

参数:: a - Array a; b - Array b; dim - Dimension for join
返回:: Joined array

getMinimum
```
public static double getMinimum(ucar.ma2.Array a)
```
Get minimum value

参数:

a - Array a

返回:

Minimum value

getMaximum
```
public static double getMaximum(ucar.ma2.Array a)
```
Get maximum value

参数:

a - Array a

返回:

Maximum value

getMinimum

public static double getMinimum(ucar.ma2.Array a,
                                double missingv)

Get minimum value

参数:: a - Array a; missingv - Missing value
返回:: Minimum value

getMaximum

public static double getMaximum(ucar.ma2.Array a,
                                double missingv)

Get maximum value

参数:: a - Array a; missingv - Missing value
返回:: Maximum value

min
```
public static double min(ucar.ma2.Array a)
```
Compute minimum value of an array

参数:

a - Array a

返回:

Minimum value

min

public static ucar.ma2.Array min(ucar.ma2.Array a,
                                 int axis)
                          throws ucar.ma2.InvalidRangeException

Compute minimum value of an array along an axis (dimension)

参数:: a - Array a; axis - Axis
返回:: Minimum value array
抛出:: ucar.ma2.InvalidRangeException

min

public static double min(ucar.ma2.Array a,
                         List<ucar.ma2.Range> ranges)
                  throws ucar.ma2.InvalidRangeException

Compute minimum value of an array

参数:: a - Array a; ranges - Range list
返回:: Minimum value
抛出:: ucar.ma2.InvalidRangeException

max
```
public static double max(ucar.ma2.Array a)
```
Compute maximum value of an array

参数:

a - Array a

返回:

Maximum value

max

public static ucar.ma2.Array max(ucar.ma2.Array a,
                                 int axis)
                          throws ucar.ma2.InvalidRangeException

Compute maximum value of an array along an axis (dimension)

参数:: a - Array a; axis - Axis
返回:: Maximum value array
抛出:: ucar.ma2.InvalidRangeException

max

public static double max(ucar.ma2.Array a,
                         List<ucar.ma2.Range> ranges)
                  throws ucar.ma2.InvalidRangeException

Compute maximum value of an array

参数:: a - Array a; ranges - Range list
返回:: Maximum value
抛出:: ucar.ma2.InvalidRangeException

sum

public static ucar.ma2.Array sum(ucar.ma2.Array a,
                                 int axis)
                          throws ucar.ma2.InvalidRangeException

Compute sum value of an array along an axis (dimension)

参数:: a - Array a; axis - Axis
返回:: Sum value array
抛出:: ucar.ma2.InvalidRangeException

sum

public static double sum(ucar.ma2.Array a,
                         List<ucar.ma2.Range> ranges)
                  throws ucar.ma2.InvalidRangeException

Compute sum value of an array

参数:: a - Array a; ranges - Range list
返回:: Sum value
抛出:: ucar.ma2.InvalidRangeException

sum
```
public static ucar.ma2.Array sum(List<ucar.ma2.Array> alist)
```
Compute the sum arry from a list of arrays

参数:

alist - list of arrays

返回:

Sum array

sum
```
public static double sum(ucar.ma2.Array a)
```
Summarize array

参数:

a - Array a

返回:

Summarize value

sum
```
public static double sum(ucar.ma2.Array a,
                         double missingValue)
```
Summarize array skip missing value

参数:

a - Array a

missingValue - Missing value

返回:

Summarize value

prodDouble
```
public static double prodDouble(ucar.ma2.Array a)
```
Produce array

参数:

a - Array a

返回:

Produce value

aveDouble
```
public static double aveDouble(ucar.ma2.Array a)
```
Average array

参数:

a - Array a

返回:

Average value

aveDouble

public static double aveDouble(ucar.ma2.Array a,
                               double missingValue)

Average array skip missing value

参数:: a - Array a; missingValue - Missing value
返回:: Average value

argMin
```
public static int argMin(ucar.ma2.Array a)
                  throws ucar.ma2.InvalidRangeException
```
Get the index of the minimum value into the flattened array.

参数:

a - Array a

返回:

Minimum value index

抛出:

ucar.ma2.InvalidRangeException

argMin

public static ucar.ma2.Array argMin(ucar.ma2.Array a,
                                    int axis)
                             throws ucar.ma2.InvalidRangeException

Get the indices of the minimum values along an axis.

参数:: a - Array a; axis - Axis
返回:: Indices
抛出:: ucar.ma2.InvalidRangeException

argMax
```
public static int argMax(ucar.ma2.Array a)
                  throws ucar.ma2.InvalidRangeException
```
Get the index of the maximum value into the flattened array.

参数:

a - Array a

返回:

Maximum value index

抛出:

ucar.ma2.InvalidRangeException

argMax

public static ucar.ma2.Array argMax(ucar.ma2.Array a,
                                    int axis)
                             throws ucar.ma2.InvalidRangeException

Get the indices of the maximum values along an axis.

参数:: a - Array a; axis - Axis
返回:: Indices
抛出:: ucar.ma2.InvalidRangeException

mean

public static ucar.ma2.Array mean(ucar.ma2.Array a,
                                  int axis)
                           throws ucar.ma2.InvalidRangeException

Compute mean value of an array along an axis (dimension)

参数:: a - Array a; axis - Axis
返回:: Mean value array
抛出:: ucar.ma2.InvalidRangeException

mean
```
public static double mean(ucar.ma2.Array a)
```
Compute mean value of an array

参数:

a - Array a

返回:

Mean value

mean
```
public static ucar.ma2.Array mean(List<ucar.ma2.Array> alist)
```
Compute the arithmetic mean arry from a list of arrays

参数:

alist - list of arrays

返回:

Mean array

mean

public static double mean(ucar.ma2.Array a,
                          List<ucar.ma2.Range> ranges)
                   throws ucar.ma2.InvalidRangeException

Compute mean value of an array

参数:: a - Array a; ranges - Range list
返回:: Mean value
抛出:: ucar.ma2.InvalidRangeException

std
```
public static ucar.ma2.Array std(ucar.ma2.Array a,
                                 int axis)
                          throws ucar.ma2.InvalidRangeException
```
Compute standard deviation value of an array along an axis (dimension)

参数:

a - Array a

axis - Axis

返回:

Standard deviation value array

抛出:

ucar.ma2.InvalidRangeException

std

public static double std(ucar.ma2.Array a,
                         List<ucar.ma2.Range> ranges)
                  throws ucar.ma2.InvalidRangeException

Compute standard deviation value of an array

参数:: a - Array a; ranges - Range list
返回:: Standard deviation value
抛出:: ucar.ma2.InvalidRangeException

std
```
public static double std(ucar.ma2.Array a)
                  throws ucar.ma2.InvalidRangeException
```
Compute standard deviation value of an array

参数:

a - Array a

返回:

Standard deviation value

抛出:

ucar.ma2.InvalidRangeException

var

public static ucar.ma2.Array var(ucar.ma2.Array a,
                                 int axis)
                          throws ucar.ma2.InvalidRangeException

Compute variance value of an array along an axis (dimension)

参数:: a - Array a; axis - Axis
返回:: Variance value array
抛出:: ucar.ma2.InvalidRangeException

var

public static double var(ucar.ma2.Array a,
                         List<ucar.ma2.Range> ranges)
                  throws ucar.ma2.InvalidRangeException

Compute variance value of an array

参数:: a - Array a; ranges - Range list
返回:: Variance value
抛出:: ucar.ma2.InvalidRangeException

median

public static ucar.ma2.Array median(ucar.ma2.Array a,
                                    int axis)
                             throws ucar.ma2.InvalidRangeException

Compute median value of an array along an axis (dimension)

参数:: a - Array a; axis - Axis
返回:: Median value array
抛出:: ucar.ma2.InvalidRangeException

median

public static double median(ucar.ma2.Array a,
                            List<ucar.ma2.Range> ranges)
                     throws ucar.ma2.InvalidRangeException

Compute median value of an array

参数:: a - Array a; ranges - Range list
返回:: Median value
抛出:: ucar.ma2.InvalidRangeException

median
```
public static double median(ucar.ma2.Array a)
```
Compute median value of an array

参数:

a - Array a

返回:

Median value

maximum
```
public static ucar.ma2.Array maximum(ucar.ma2.Array x1,
                                     ucar.ma2.Array x2)
```
Element-wise maximum of array elements.

参数:

x1 - Array 1

x2 - Array 2

返回:

The maximum of x1 and x2, element-wise.

fmax
```
public static ucar.ma2.Array fmax(ucar.ma2.Array x1,
                                  ucar.ma2.Array x2)
```
Element-wise maximum of array elements, ignores NaNs.

参数:

x1 - Array 1

x2 - Array 2

返回:

The maximum of x1 and x2, element-wise.

minimum
```
public static ucar.ma2.Array minimum(ucar.ma2.Array x1,
                                     ucar.ma2.Array x2)
```
Element-wise minimum of array elements.

参数:

x1 - Array 1

x2 - Array 2

返回:

The minimum of x1 and x2, element-wise.

fmin
```
public static ucar.ma2.Array fmin(ucar.ma2.Array x1,
                                  ucar.ma2.Array x2)
```
Element-wise minimum of array elements, ignores NaNs.

参数:

x1 - Array 1

x2 - Array 2

返回:

The minimum of x1 and x2, element-wise.

rolling_mean

public static ucar.ma2.Array rolling_mean(ucar.ma2.Array x,
                                          int window,
                                          boolean center)

Moving average function

参数:: x - The data array; window - Size of moving window; center - Set the data in center moving window
返回:: Moving averaged array

missingToNaN

public static void missingToNaN(ucar.ma2.Array a,
                                Number missingv)

Set missing value to NaN

参数:: a - Array a; missingv - Missing value

setValue

public static void setValue(ucar.ma2.Array a,
                            ucar.ma2.Array b,
                            Number value)

Set value

参数:: a - Array a; b - Array b - 0/1 data; value - Value

setValue

public static void setValue(ucar.ma2.Array a,
                            ucar.ma2.Array b,
                            ucar.ma2.Array value)

Set value

参数:: a - Array a; b - Array b - 0/1 data; value - Value array

asList
```
public static List<Object> asList(ucar.ma2.Array a)
```
As number list

参数:

a - Array a

返回:

Result number list

uv2ds
```
public static ucar.ma2.Array[] uv2ds(ucar.ma2.Array u,
                                     ucar.ma2.Array v)
```
Get wind direction and wind speed from U/V

参数:

u - U component

v - V component

返回:

Wind direction and wind speed

uv2ds
```
public static double[] uv2ds(double u,
                             double v)
```
Get wind direction and wind speed from U/V

参数:

u - U component

v - V component

返回:

Wind direction and wind speed

ds2uv
```
public static ucar.ma2.Array[] ds2uv(ucar.ma2.Array windDir,
                                     ucar.ma2.Array windSpeed)
```
Get wind U/V components from wind direction and speed

参数:

windDir - Wind direction

windSpeed - Wind speed

返回:

Wind U/V components

ds2uv
```
public static double[] ds2uv(double windDir,
                             double windSpeed)
```
Get wind U/V components from wind direction and speed

参数:

windDir - Wind direction

windSpeed - Wind speed

返回:

Wind U/V components

inPolygon

public static ucar.ma2.Array inPolygon(ucar.ma2.Array a,
                                       List<Number> x,
                                       List<Number> y,
                                       VectorLayer layer)

In polygon function

参数:: a - Array a; x - X dimension values; y - Y dimension values; layer - Polygon vector layer
返回:: Result array with cell values of 1 inside polygons and -1 outside polygons

inPolygon

public static ucar.ma2.Array inPolygon(ucar.ma2.Array a,
                                       List<Number> x,
                                       List<Number> y,
                                       PolygonShape ps)

In polygon function

参数:: a - Array a; x - X dimension values; y - Y dimension values; ps - Polygon shape
返回:: Result array with cell values of 1 inside polygons and -1 outside polygons

inPolygon

public static ucar.ma2.Array inPolygon(ucar.ma2.Array a,
                                       List<Number> x,
                                       List<Number> y,
                                       List<PolygonShape> polygons)

In polygon function

参数:: a - Array a; x - X dimension values; y - Y dimension values; polygons - PolygonShape list
返回:: Result array with cell values of 1 inside polygons and -1 outside polygons

inPolygon

public static ucar.ma2.Array inPolygon(ucar.ma2.Array x,
                                       ucar.ma2.Array y,
                                       List<PolygonShape> polygons)

In polygon function

参数:: x - X coordinates; y - Y coordinates; polygons - PolygonShape list
返回:: Result boolean array

inPolygon

public static ucar.ma2.Array inPolygon(ucar.ma2.Array a,
                                       List<Number> x,
                                       List<Number> y,
                                       List<Number> x_p,
                                       List<Number> y_p)

In polygon function

参数:: a - Array a; x - X dimension values; y - Y dimension values; x_p - X coordinate of the polygon; y_p - Y coordinate of the polygon
返回:: Result array with cell values of 1 inside polygons and -1 outside polygons

inPolygon

public static ucar.ma2.Array inPolygon(ucar.ma2.Array x,
                                       ucar.ma2.Array y,
                                       ucar.ma2.Array x_p,
                                       ucar.ma2.Array y_p)

In polygon function

参数:: x - X coordinates; y - Y coordinates; x_p - X coordinate of the polygon; y_p - Y coordinate of the polygon
返回:: Result boolean array

maskout

public static ucar.ma2.Array maskout(ucar.ma2.Array a,
                                     List<Number> x,
                                     List<Number> y,
                                     VectorLayer layer,
                                     Number missingValue)

Maskout function

参数:: a - Array a; x - X dimension values; y - Y dimension values; layer - VectorLayer; missingValue - Missing value
返回:: Result array with cell values of missing outside polygons

maskout

public static ucar.ma2.Array maskout(ucar.ma2.Array a,
                                     List<Number> x,
                                     List<Number> y,
                                     PolygonShape polygon,
                                     Number missingValue)

Maskout function

参数:: a - Array a; x - X dimension values; y - Y dimension values; polygon - Polygon shape; missingValue - Missing value
返回:: Result array with cell values of missing outside polygons

maskout

public static ucar.ma2.Array maskout(ucar.ma2.Array a,
                                     ucar.ma2.Array x,
                                     ucar.ma2.Array y,
                                     List<PolygonShape> polygons)

Maskout function

参数:: a - Array a; x - X Array; y - Y Array; polygons - Polygons for maskout
返回:: Result array with cell values of missing outside polygons

maskin

public static ucar.ma2.Array maskin(ucar.ma2.Array a,
                                    ucar.ma2.Array x,
                                    ucar.ma2.Array y,
                                    List<PolygonShape> polygons)

Maskin function

参数:: a - Array a; x - X Array; y - Y Array; polygons - Polygons for maskin
返回:: Result array with cell values of missing inside polygons

maskout_Remove

public static ucar.ma2.Array[] maskout_Remove(ucar.ma2.Array a,
                                              ucar.ma2.Array x,
                                              ucar.ma2.Array y,
                                              List<PolygonShape> polygons)

Maskout function

参数:: a - Array a; x - X Array; y - Y Array; polygons - Polygons for maskout
返回:: Result arrays removing cells outside polygons

maskin_Remove

public static ucar.ma2.Array[] maskin_Remove(ucar.ma2.Array a,
                                             ucar.ma2.Array x,
                                             ucar.ma2.Array y,
                                             List<PolygonShape> polygons)

Maskin function

参数:: a - Array a; x - X Array; y - Y Array; polygons - Polygons for maskin
返回:: Result arrays removing cells inside polygons

maskout

public static ucar.ma2.Array maskout(ucar.ma2.Array a,
                                     List<Number> x,
                                     List<Number> y,
                                     List<PolygonShape> polygons)

Maskout function

参数:: a - Array a; x - X dimension values; y - Y dimension values; polygons - PolygonShape list
返回:: Result array with cell values of missing outside polygons

maskout

public static ucar.ma2.Array maskout(ucar.ma2.Array a,
                                     List<Number> x,
                                     List<Number> y,
                                     List<PolygonShape> polygons,
                                     Number missingValue)

Maskout function

参数:: a - Array a; x - X dimension values; y - Y dimension values; polygons - PolygonShape list; missingValue - Missing value
返回:: Result array with cell values of missing outside polygons

maskout

public static ucar.ma2.Array maskout(ucar.ma2.Array a,
                                     ucar.ma2.Array m,
                                     Number missingValue)

Maskout function

参数:: a - Array a; m - Array mask; missingValue - Missing value
返回:: Result array

maskout

public static ucar.ma2.Array maskout(ucar.ma2.Array a,
                                     ucar.ma2.Array m)

Maskout function

参数:: a - Array a; m - Array mask
返回:: Result array

maskin

public static ucar.ma2.Array maskin(ucar.ma2.Array a,
                                    ucar.ma2.Array m)

Maskin function

参数:: a - Array a; m - Array mask
返回:: Result array

getR
```
public static float getR(List<Number> xData,
                         List<Number> yData)
```
Get correlation coefficient How well did the forecast values correspond to the observed values? Range: -1 to 1. Perfect score: 1.

参数:

xData - X data array

yData - Y data array

返回:

Correlation coefficent

getR
```
public static float getR(ucar.ma2.Array xData,
                         ucar.ma2.Array yData)
```
Get correlation coefficient How well did the forecast values correspond to the observed values? Range: -1 to 1. Perfect score: 1.

参数:

xData - X data array

yData - Y data array

返回:

Correlation coefficent

leastSquareTrend

public static double[] leastSquareTrend(List<Number> xData,
                                        List<Number> yData)

Determine the least square trend equation - linear fitting

参数:: xData - X data array; yData - Y data array
返回:: Result array - y intercept and slope

lineRegress

public static double[] lineRegress(List<Number> xData,
                                   List<Number> yData)

Linear regress

参数:: xData - X data array; yData - Y data array
返回:: Result array - y intercept, slope and correlation coefficent

lineRegress
```
public static double[] lineRegress(ucar.ma2.Array xData,
                                   ucar.ma2.Array yData)
```
Linear regress

参数:

xData - X data array

yData - Y data array

返回:

Slope, intercept, correlation coefficent, two-sided p-value, the standard error of the estimate for the slope, valid data number

polyVal
```
public static ucar.ma2.Array polyVal(List<Number> p,
                                     ucar.ma2.Array x)
```
Evaluate a polynomial at specific values. If p is of length N, this function returns the value: p[0]*x**(N-1) + p[1]*x**(N-2) + ... + p[N-2]*x + p[N-1]

参数:

p - array_like or poly1d object

x - array_like or poly1d object

返回:

ndarray or poly1d

cdiff
```
public static ucar.ma2.Array cdiff(ucar.ma2.Array data,
                                   int dimIdx)
```
Performs a centered difference operation on a grid data along one dimension direction

参数:

data - The grid data

dimIdx - Direction dimension index

返回:

Result grid data

cdiff_bak
```
public static ucar.ma2.Array cdiff_bak(ucar.ma2.Array data,
                                       boolean isX)
```
Performs a centered difference operation on a grid data in the x or y direction

参数:

data - The grid data

isX - If is x direction

返回:

Result grid data

hcurl

public static ucar.ma2.Array hcurl(ucar.ma2.Array uData,
                                   ucar.ma2.Array vData,
                                   List<Number> xx,
                                   List<Number> yy)

Calculates the vertical component of the curl (ie, vorticity)

参数:: uData - U component; vData - V component; xx - X dimension value; yy - Y dimension value
返回:: Curl

hdivg

public static ucar.ma2.Array hdivg(ucar.ma2.Array uData,
                                   ucar.ma2.Array vData,
                                   List<Number> xx,
                                   List<Number> yy)

Calculates the horizontal divergence using finite differencing

参数:: uData - U component; vData - V component; xx - X dimension value; yy - Y dimension value
返回:: Divergence

magnitude

public static ucar.ma2.Array magnitude(ucar.ma2.Array uData,
                                       ucar.ma2.Array vData)

Take magnitude value from U/V grid data

参数:: uData - U grid data; vData - V grid data
返回:: Magnitude grid data

tc2tf
```
public static ucar.ma2.Array tc2tf(ucar.ma2.Array tc)
```
Calculate fahrenheit temperature from celsius temperature

参数:

tc - Celsius temperature

返回:

Fahrenheit temperature

tf2tc
```
public static ucar.ma2.Array tf2tc(ucar.ma2.Array tf)
```
Calculate celsius temperature from fahrenheit temperature

参数:

tf - Fahrenheit temperature

返回:

Celsius temperature

qair2rh
```
public static ucar.ma2.Array qair2rh(ucar.ma2.Array qair,
                                     ucar.ma2.Array temp,
                                     double press)
```
Calculate relative humidity from specific humidity

参数:

qair - Specific humidity, dimensionless (e.g. kg/kg) ratio of water mass / total air mass

temp - Temperature - degree c

press - Pressure - hPa (mb)

返回:

Relative humidity as percent (i.e. 80%)

qair2rh
```
public static ucar.ma2.Array qair2rh(ucar.ma2.Array qair,
                                     ucar.ma2.Array temp,
                                     ucar.ma2.Array press)
```
Calculate relative humidity

参数:

qair - Specific humidity, dimensionless (e.g. kg/kg) ratio of water mass / total air mass

temp - Temperature - degree c

press - Pressure - hPa (mb)

返回:

Relative humidity as percent (i.e. 80%)

press2Height
```
public static ucar.ma2.Array press2Height(ucar.ma2.Array press)
```
Calculate height from pressure

参数:

press - Pressure - hPa

返回:

Height - m

height2Press
```
public static ucar.ma2.Array height2Press(ucar.ma2.Array height)
```
Calculate pressure from height

参数:

height - Height - m

返回:

Pressure - hPa

类 ArrayMath

字段概要

构造器概要

方法概要

从类继承的方法 java.lang.Object

字段详细资料

fill_value

构造器详细资料

ArrayMath

方法详细资料

getDataType

typeToNBytes

isComplex

isNumeric

broadcastCheck

broadcast

add

add

add

add

sub

sub

sub

sub

sub

sub

sub

mul

mul

mul

mul

div

div

div

div

div

div

div

pow

pow

pow

pow

pow

pow

pow

sqrt

exp

log

log10

abs

equal

equal

lessThan

lessThan

lessThanOrEqual

lessThanOrEqual

greaterThan

greaterThan

greaterThanOrEqual

greaterThanOrEqual

notEqual

notEqual

any

any

all

all

inValues

containsNaN

removeNaN

removeNaN

nonzero

bitAnd

bitAnd

bitOr

bitOr

bitXor

bitXor

bitInvert

leftShift

leftShift