java.lang.Object
- org.meteoinfo.ndarray.math.ArrayMath

public class ArrayMath
extends java.lang.Object

作者:: wyq

字段概要

字段
修饰符和类型字段说明

static double fill_value

构造器概要

构造器
构造器说明

ArrayMath()

方法概要

所有方法静态方法具体方法
修饰符和类型	方法	说明
`static Array`	`abs(Array a)`	Array absolute
`static Array`	`acos(Array a)`	Arc cosine function
`static Array`	`add(Array a, java.lang.Number b)`	Array add
`static Array`	`add(Array a, Array b)`	Array add
`static Array`	`add(Array a, Complex b)`	Array add
`static boolean`	`all(Array a)`	Test whether all array element evaluates to True.
`static Array`	`all(Array a, int axis)`	Test whether all array element along a given axis evaluates to True.
`static boolean`	`any(Array a)`	Test whether any array element evaluates to True.
`static Array`	`any(Array a, int axis)`	Test whether any array element along a given axis evaluates to True.
`static int`	`argMax(Array a)`	Get the index of the maximum value into the flattened array.
`static Array`	`argMax(Array a, int axis)`	Get the indices of the maximum values along an axis.
`static int`	`argMin(Array a)`	Get the index of the minimum value into the flattened array.
`static Array`	`argMin(Array a, int axis)`	Get the indices of the minimum values along an axis.
`static Array`	`asin(Array a)`	Arc sine function
`static java.util.List<java.lang.Object>`	`asList(Array a)`	As number list
`static Array`	`atan(Array a)`	Arc tangen function
`static Array`	`atan2(Array a, Array b)`	Arc tangen function
`static double`	`aveDouble(Array a)`	Average array
`static double`	`aveDouble(Array a, double missingValue)`	Average array skip missing value
`static Array`	`binCount(Array a)`	Count number of occurrences of each value in array of non-negative ints
`static Array`	`binCount(Array a, Array weights)`	Count number of occurrences of each value in array of non-negative ints
`static Array`	`bitAnd(Array a, java.lang.Number b)`	Bit and operation
`static Array`	`bitAnd(Array a, Array b)`	Bit and operation
`static Array`	`bitInvert(Array a)`	Bit inversion ~ operation
`static Array`	`bitOr(Array a, java.lang.Number b)`	Bit or \| operation
`static Array`	`bitOr(Array a, Array b)`	Bit or \| operation
`static Array`	`bitXor(Array a, java.lang.Number b)`	Bit exclusive or ^ operation
`static Array`	`bitXor(Array a, Array b)`	Bit exclusive or \| operation
`static int[]`	`broadcast(Array a, Array b)`	Get broadcast shape from two arrays
`static int`	`broadcastCheck(Array a, Array b)`	Broadcast check for two arrays.
`static double[]`	`cartesianToPolar(double x, double y)`	Convert cartesian to polar coordinate
`static Array[]`	`cartesianToPolar(Array x, Array y)`	Convert cartesian to polar coordinate
`static Array`	`cdiff(Array data, int dimIdx)`	Performs a centered difference operation on a grid data along one dimension direction
`static Array`	`cdiff_bak(Array data, boolean isX)`	Performs a centered difference operation on a grid data in the x or y direction
`static Array`	`ceil(Array a)`	Return the ceiling of the input, element-wise.
`static boolean`	`containsNaN(Array a)`	Check if the array contains NaN value
`static Array`	`copy(Array a)`	Copy array
`static Array`	`cos(Array a)`	Cosine function
`static Array`	`cumsum(Array a, int axis)`	Return the cumulative sum of the elements along a given axis.
`static java.util.List<java.lang.Double>`	`cumsum(Array a, java.util.List<Range> ranges)`	Compute cumulative sum value of an array
`static Array`	`div(java.lang.Number b, Array a)`	Array divide
`static Array`	`div(Array a, java.lang.Number b)`	Array divide
`static Array`	`div(Array a, Array b)`	Array divide
`static Array`	`div(Array a, Complex b)`	Array divide
`static Array`	`div(Complex b, Array a)`	Array divide
`static Array`	`dot(Array a, Array b)`	Matrix multiplication
`static java.lang.Number`	`doubleToNumber(double v, DataType dt)`	Convert double to number by data type
`static Array`	`equal(Array a, java.lang.Number b)`	Array equal
`static Array`	`equal(Array a, java.lang.String b)`	Array equal
`static Array`	`equal(Array a, Array b)`	Array equal
`static Array`	`exp(Array a)`	Exponent function
`static Array`	`flip(Array a, int idx)`	Flip array
`static Array`	`flip(Array a, java.util.List<java.lang.Integer> idxs)`	Flip array
`static Array`	`floor(Array a)`	Return the ceiling of the input, element-wise.
`static Array`	`floorDiv(java.lang.Number b, Array a)`	Array floor divide
`static Array`	`floorDiv(Array a, java.lang.Number b)`	Array floor divide
`static Array`	`floorDiv(Array a, Array b)`	Array mod
`static Array`	`fmax(Array x1, Array x2)`	Element-wise maximum of array elements, ignores NaNs.
`static Array`	`fmin(Array x1, Array x2)`	Element-wise minimum of array elements, ignores NaNs.
`static DataType`	`getDataType(java.lang.Object o)`	Get data type
`static double`	`getMaximum(Array a)`	Get maximum value
`static double`	`getMaximum(Array a, double missingv)`	Get maximum value
`static double`	`getMinimum(Array a)`	Get minimum value
`static double`	`getMinimum(Array a, double missingv)`	Get minimum value
`static float`	`getR(java.util.List<java.lang.Number> xData, java.util.List<java.lang.Number> yData)`	Get correlation coefficient How well did the forecast values correspond to the observed values?
`static float`	`getR(Array xData, Array yData)`	Get correlation coefficient How well did the forecast values correspond to the observed values?
`static Array`	`greaterThan(Array a, java.lang.Number b)`	Array greater than
`static Array`	`greaterThan(Array a, Array b)`	Array greater than
`static Array`	`greaterThanOrEqual(Array a, java.lang.Number b)`	Array greater than or equal
`static Array`	`greaterThanOrEqual(Array a, Array b)`	Array greater than or equal
`static Array`	`hcurl(Array uData, Array vData, java.util.List<java.lang.Number> xx, java.util.List<java.lang.Number> yy)`	Calculates the vertical component of the curl (ie, vorticity)
`static Array`	`hcurl(Array uData, Array vData, Array xx, Array yy)`	Calculates the vertical component of the curl (ie, vorticity)
`static Array`	`hdivg(Array uData, Array vData, java.util.List<java.lang.Number> xx, java.util.List<java.lang.Number> yy)`	Calculates the horizontal divergence using finite differencing
`static Array`	`hdivg(Array uData, Array vData, Array xx, Array yy)`	Calculates the horizontal divergence using finite differencing
`static Array`	`inValues(Array a, java.util.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`	`isClose(java.lang.Number a, java.lang.Number b, double rTol, double aTol)`	Returns a boolean where two number are equal within a tolerance.
`static boolean`	`isClose(java.lang.Number a, java.lang.Number b, double rTol, double aTol, boolean equalNaN)`	Returns a boolean where two number are equal within a tolerance.
`static Array`	`isClose(Array a, Array b, double rTol, double aTol)`	Returns a boolean array where two arrays are element-wise equal within a tolerance.
`static Array`	`isClose(Array a, Array b, double rTol, double aTol, boolean equalNaN)`	Returns a boolean array where two arrays are element-wise equal within a tolerance.
`static boolean`	`isComplex(Array a)`	Check if an array is complex data type
`static Array`	`isFinite(Array a)`	Test element-wise for finiteness (not infinity or not Not a Number).
`static Array`	`isInfinite(Array a)`	Test element-wise for positive or negative infinity.
`static boolean`	`isNumeric(Array a)`	Check if an array is numeric array
`static Array`	`join(Array a, Array b, int dim)`	Join two arrays by a dimension
`static double[]`	`leastSquareTrend(java.util.List<java.lang.Number> xData, java.util.List<java.lang.Number> yData)`	Determine the least square trend equation - linear fitting
`static Array`	`leftShift(Array a, java.lang.Number b)`	Bit left shift operation
`static Array`	`leftShift(Array a, Array b)`	Bit left shift operation
`static Array`	`lessThan(Array a, java.lang.Number b)`	Array less than
`static Array`	`lessThan(Array a, Array b)`	Array less than
`static Array`	`lessThanOrEqual(Array a, java.lang.Number b)`	Array less than or equal
`static Array`	`lessThanOrEqual(Array a, Array b)`	Array less than or equal
`static double[]`	`lineRegress(java.util.List<java.lang.Number> xData, java.util.List<java.lang.Number> yData)`	Linear regress
`static double[]`	`lineRegress(Array xData, Array yData)`	Linear regress
`static Array`	`log(Array a)`	Log function
`static Array`	`log10(Array a)`	Log10 function
`static Array`	`logicalNot(Array a)`	Logical not
`static Array`	`magnitude(Array uData, Array vData)`	Take magnitude value from U/V grid data
`static Array`	`maskin(Array a, Array m)`	Maskin function
`static Array`	`maskout(Array a, Array m)`	Maskout function
`static Array`	`maskout(Array a, Array m, java.lang.Number missingValue)`	Maskout function
`static java.lang.Number`	`max(Array a)`	Compute maximum value of an array
`static Array`	`max(Array a, int axis)`	Compute maximum value of an array along an axis (dimension)
`static double`	`max(Array a, java.util.List<Range> ranges)`	Compute maximum value of an array
`static double`	`maximum(java.util.List<java.lang.Double> aDataList)`	Maximum function
`static Array`	`maximum(Array x1, Array x2)`	Element-wise maximum of array elements.
`static Array`	`mean(java.util.List<Array> alist)`	Compute the arithmetic mean arry from a list of arrays
`static double`	`mean(Array a)`	Compute mean value of an array
`static Array`	`mean(Array a, int axis)`	Compute mean value of an array along an axis (dimension)
`static Array`	`mean(Array a, java.util.List<java.lang.Integer> axis)`	Compute mean value of an array along an axis (dimension)
`static double`	`meanRange(Array a, java.util.List<Range> ranges)`	Compute mean value of an array by ranges
`static double`	`median(java.util.List<java.lang.Double> aDataList)`	Median funtion
`static double`	`median(Array a)`	Compute median value of an array
`static Array`	`median(Array a, int axis)`	Compute median value of an array along an axis (dimension)
`static double`	`median(Array a, java.util.List<Range> ranges)`	Compute median value of an array
`static java.lang.Number`	`min(Array a)`	Compute minimum value of an array
`static Array`	`min(Array a, int axis)`	Compute minimum value of an array along an axis (dimension)
`static double`	`min(Array a, java.util.List<Range> ranges)`	Compute minimum value of an array
`static double`	`minimum(java.util.List<java.lang.Double> aDataList)`	Minimum function
`static Array`	`minimum(Array x1, Array x2)`	Element-wise minimum of array elements.
`static void`	`missingToNaN(Array a, java.lang.Number missingv)`	Set missing value to NaN
`static Array`	`mod(java.lang.Number b, Array a)`	Array mod
`static Array`	`mod(Array a, java.lang.Number b)`	Array mod
`static Array`	`mod(Array a, Array b)`	Array mod
`static Array`	`mul(Array a, java.lang.Number b)`	Array multiply
`static Array`	`mul(Array a, Array b)`	Array mutiply
`static Array`	`mul(Array a, Complex b)`	Array multiply
`static Array`	`notEqual(Array a, java.lang.Number b)`	Array not equal
`static Array`	`notEqual(Array a, Array b)`	Array not equal
`static Array`	`outer(Array a, Array b)`	Compute the outer product of two vectors.
`static void`	`place(Array a, Array b, Array value)`	Change elements of an array based on conditional and input values.
`static double[]`	`polarToCartesian(double B, double r)`	Convert poar to cartesian coordinate
`static Array[]`	`polarToCartesian(Array B, Array r)`	Convert poar to cartesian coordinate
`static Array`	`polyVal(java.util.List<java.lang.Number> p, Array x)`	Evaluate a polynomial at specific values.
`static Array`	`pow(java.lang.Number a, Array b)`	Array pow function
`static Array`	`pow(Array a, java.lang.Number b)`	Array pow function
`static Array`	`pow(Array a, Array b)`	Array pow function
`static Array`	`pow(Array a, Complex b)`	Array pow function
`static Array`	`pow(Complex b, Array a)`	Array pow function
`static double`	`prodDouble(Array a)`	Produce array
`static double`	`quantile(java.util.List<java.lang.Double> aDataList, int aNum)`	Quantile function
`static double`	`quantile(Array a, int aNum)`	Quantile function
`static Array`	`removeNaN(Array a)`	Remove NaN values in an array
`static Array[]`	`removeNaN(Array... a)`	Remove NaN values in arrays
`static void`	`replaceValue(Array a, java.lang.Object oValue, java.lang.Object value)`	Replace value
`static Array`	`rightShift(Array a, java.lang.Number b)`	Bit right shift operation
`static Array`	`rightShift(Array a, Array b)`	Bit right shift operation
`static Array`	`rolling_mean(Array x, int window, boolean center)`	Moving average function
`static Array`	`rot90(Array a, int k)`	Rotate an array by 90 degrees in counter-clockwise direction.
`static Array`	`section(Array a, int[] origin, int[] size, int[] stride)`	Section array
`static Array`	`section(Array a, java.util.List<Range> ranges)`	Section array
`static Array`	`setSection(Array a, int[] origin, int[] shape, Array v)`	Set section
`static Array`	`setSection(Array a, java.util.List<Range> ranges, java.lang.Number v)`	Set section
`static Array`	`setSection(Array a, java.util.List<Range> ranges, java.lang.Object v)`	Set section
`static Array`	`setSection(Array a, java.util.List<Range> ranges, Array v)`	Set section
`static Array`	`setSection_List(Array a, java.util.List<java.util.List<java.lang.Integer>> ranges, java.lang.Number v)`	Set section
`static Array`	`setSection_List(Array a, java.util.List<java.util.List<java.lang.Integer>> ranges, Array v)`	Set section
`static Array`	`setSection_Mix(Array a, java.util.List<java.lang.Object> ranges, java.lang.Number v)`	Set section
`static Array`	`setSection_Mix(Array a, java.util.List<java.lang.Object> ranges, Array v)`	Set section
`static Array`	`setSection_Mix_Bak(Array a, java.util.List<java.lang.Object> ranges, java.lang.Number v)`	Set section
`static Array`	`setSection_Mix_Bak(Array a, java.util.List<java.lang.Object> ranges, Array v)`	Set section
`static void`	`setValue(Array a, Array b, java.lang.Number value)`	Set value
`static void`	`setValue(Array a, Array b, Array value)`	Set value
`static Array`	`sign(Array x)`	Returns an element-wise indication of the sign of a number.
`static Array`	`sin(Array a)`	Sine function
`static Array`	`sqrt(Array a)`	Sqrt function
`static double`	`std(Array a)`	Compute standard deviation value of an array
`static double`	`std(Array a, int ddof)`	Compute standard deviation value of an array
`static Array`	`std(Array a, int axis, int ddof)`	Compute standard deviation value of an array along an axis (dimension)
`static double`	`std(Array a, java.util.List<Range> ranges, int ddof)`	Compute standard deviation value of an array
`static Array`	`sub(java.lang.Number b, Array a)`	Array subtract
`static Array`	`sub(Array a, java.lang.Number b)`	Array subtract
`static Array`	`sub(Array a, Array b)`	Array subtract
`static Array`	`sub(Array a, Complex b)`	Array subtract
`static Array`	`sub(Complex b, Array a)`	Array subtract
`static Array`	`sum(java.util.List<Array> alist)`	Compute the sum arry from a list of arrays
`static java.lang.Number`	`sum(Array a)`	Summarize array
`static double`	`sum(Array a, double missingValue)`	Summarize array skip missing value
`static Array`	`sum(Array a, int axis)`	Compute sum value of an array along an axis (dimension)
`static double`	`sum(Array a, java.util.List<Range> ranges)`	Compute sum value of an array
`static Array`	`take(Array a, java.util.List<java.lang.Object> ranges)`	Take elements from an array along an axis.
`static Array`	`take(Array a, Array condition)`	Extract 1D array by boolean array
`static Array`	`take(Array a, Array indices, java.lang.Integer axis)`	Take elements from an array along an axis.
`static Array`	`takeValues(Array a, java.util.List<java.util.List<java.lang.Integer>> ranges)`	Take elements from an array.
`static Array`	`tan(Array a)`	Tangent function
`static Array`	`toDegrees(Array a)`	Convert radians to degrees function
`static Array`	`toRadians(Array a)`	Convert radians to degrees function
`static Array`	`transpose(Array a, int dim1, int dim2)`	Transpose array
`static double`	`trapz(Array y, double dx)`	Integrate vector array using the composite trapezoidal rule.
`static Array`	`trapz(Array a, double dx, int axis)`	Integrate vector array using the composite trapezoidal rule.
`static double`	`trapz(Array y, double dx, java.util.List<Range> ranges)`	Integrate vector array using the composite trapezoidal rule.
`static double`	`trapz(Array y, Array x)`	Integrate vector array using the composite trapezoidal rule.
`static Array`	`trapz(Array a, Array x, int axis)`	Integrate vector array using the composite trapezoidal rule.
`static double`	`trapz(Array y, Array x, java.util.List<Range> ranges)`	Integrate vector array using the composite trapezoidal rule.
`static short`	`typeToNBytes(DataType dataType)`	Return the number of bytes per element for the given typecode.
`static double`	`var(Array a, int ddof)`	Compute variance value of an array
`static Array`	`var(Array a, int axis, int ddof)`	Compute variance value of an array along an axis (dimension)
`static double`	`var(Array a, java.util.List<Range> ranges, int ddof)`	Compute variance value of an array
`static double`	`vdot(Array a, 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 DataType getDataType(java.lang.Object o)

Get data type

参数:: o - Object
返回:: Data type

typeToNBytes
```
public static short typeToNBytes(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(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(Array a)
```
Check if an array is numeric array

参数:

a - The array

返回:

Numeric or not

broadcastCheck
```
public static int broadcastCheck(Array a,
                                 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(Array a,
                              Array b)

Get broadcast shape from two arrays

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

add

public static Array add(Array a,
                        Array b)

Array add

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

add

public static Array add(Array a,
                        java.lang.Number b)

Array add

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

add

public static Array add(Array a,
                        Complex b)

Array add

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

sub

public static Array sub(Array a,
                        Array b)

Array subtract

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

sub

public static Array sub(Array a,
                        java.lang.Number b)

Array subtract

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

sub

public static Array sub(Array a,
                        Complex b)

Array subtract

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

sub

public static Array sub(java.lang.Number b,
                        Array a)

Array subtract

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

sub

public static Array sub(Complex b,
                        Array a)

Array subtract

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

mul

public static Array mul(Array a,
                        Array b)

Array mutiply

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

mul

public static Array mul(Array a,
                        java.lang.Number b)

Array multiply

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

mul

public static Array mul(Array a,
                        Complex b)

Array multiply

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

div

public static Array div(Array a,
                        Array b)

Array divide

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

div

public static Array div(Array a,
                        java.lang.Number b)

Array divide

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

div

public static Array div(Array a,
                        Complex b)

Array divide

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

div

public static Array div(java.lang.Number b,
                        Array a)

Array divide

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

div

public static Array div(Complex b,
                        Array a)

Array divide

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

mod

public static Array mod(Array a,
                        Array b)

Array mod

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

mod

public static Array mod(Array a,
                        java.lang.Number b)

Array mod

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

mod

public static Array mod(java.lang.Number b,
                        Array a)

Array mod

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

floorDiv

public static Array floorDiv(Array a,
                             Array b)

Array mod

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

floorDiv

public static Array floorDiv(Array a,
                             java.lang.Number b)

Array floor divide

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

floorDiv

public static Array floorDiv(java.lang.Number b,
                             Array a)

Array floor divide

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

pow

public static Array pow(Array a,
                        java.lang.Number b)

Array pow function

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

pow

public static Array pow(Array a,
                        Complex b)

Array pow function

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

pow

public static Array pow(java.lang.Number a,
                        Array b)

Array pow function

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

pow

public static Array pow(Complex b,
                        Array a)

Array pow function

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

pow

public static Array pow(Array a,
                        Array b)

Array pow function

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

sqrt
```
public static Array sqrt(Array a)
```
Sqrt function

参数:

a - Array a

返回:

Result array

exp
```
public static Array exp(Array a)
```
Exponent function

参数:

a - Array a

返回:

Result array

log
```
public static Array log(Array a)
```
Log function

参数:

a - Array a

返回:

Result array

log10
```
public static Array log10(Array a)
```
Log10 function

参数:

a - Array a

返回:

Result array

abs
```
public static Array abs(Array a)
```
Array absolute

参数:

a - Array a

返回:

Result array

ceil
```
public static Array ceil(Array a)
```
Return the ceiling of the input, element-wise.

参数:

a - Array a

返回:

Result array

floor
```
public static Array floor(Array a)
```
Return the ceiling of the input, element-wise.

参数:

a - Array a

返回:

Result array

equal

public static Array equal(Array a,
                          Array b)

Array equal

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

equal

public static Array equal(Array a,
                          java.lang.Number b)

Array equal

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

equal

public static Array equal(Array a,
                          java.lang.String b)

Array equal

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

isClose
```
public static boolean isClose(java.lang.Number a,
                              java.lang.Number b,
                              double rTol,
                              double aTol)
```
Returns a boolean where two number are equal within a tolerance.

参数:

a - Number a.

b - Number b.

rTol - The relative tolerance parameter

aTol - The absolute tolerance parameter

返回:

Result boolean

isClose
```
public static boolean isClose(java.lang.Number a,
                              java.lang.Number b,
                              double rTol,
                              double aTol,
                              boolean equalNaN)
```
Returns a boolean where two number are equal within a tolerance.

参数:

a - Number a.

b - Number b.

rTol - The relative tolerance parameter

aTol - The absolute tolerance parameter

equalNaN - Whether to compare NaN’s as equal

返回:

Result boolean

isClose
```
public static Array isClose(Array a,
                            Array b,
                            double rTol,
                            double aTol)
```
Returns a boolean array where two arrays are element-wise equal within a tolerance.

参数:

a - Input array a.

b - Input array b.

rTol - The relative tolerance parameter

aTol - The absolute tolerance parameter

返回:

Result array

isClose
```
public static Array isClose(Array a,
                            Array b,
                            double rTol,
                            double aTol,
                            boolean equalNaN)
```
Returns a boolean array where two arrays are element-wise equal within a tolerance.

参数:

a - Input array a.

b - Input array b.

rTol - The relative tolerance parameter

aTol - The absolute tolerance parameter

equalNaN - Whether to compare NaN’s as equal

返回:

Result array

isInfinite
```
public static Array isInfinite(Array a)
```
Test element-wise for positive or negative infinity.

参数:

a - Array a

返回:

Result array

isFinite
```
public static Array isFinite(Array a)
```
Test element-wise for finiteness (not infinity or not Not a Number).

参数:

a - Array a

返回:

Result array

lessThan

public static Array lessThan(Array a,
                             Array b)

Array less than

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

lessThan

public static Array lessThan(Array a,
                             java.lang.Number b)

Array less than

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

lessThanOrEqual

public static Array lessThanOrEqual(Array a,
                                    Array b)

Array less than or equal

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

lessThanOrEqual

public static Array lessThanOrEqual(Array a,
                                    java.lang.Number b)

Array less than or equal

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

greaterThan

public static Array greaterThan(Array a,
                                Array b)

Array greater than

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

greaterThan

public static Array greaterThan(Array a,
                                java.lang.Number b)

Array greater than

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

greaterThanOrEqual

public static Array greaterThanOrEqual(Array a,
                                       Array b)

Array greater than or equal

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

greaterThanOrEqual

public static Array greaterThanOrEqual(Array a,
                                       java.lang.Number b)

Array greater than or equal

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

notEqual

public static Array notEqual(Array a,
                             Array b)

Array not equal

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

notEqual

public static Array notEqual(Array a,
                             java.lang.Number b)

Array not equal

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

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

参数:

a - The array

返回:

Boolean

any
```
public static Array any(Array a,
                        int axis)
                 throws 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:

InvalidRangeException

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

参数:

a - The array

返回:

Boolean

all
```
public static Array all(Array a,
                        int axis)
                 throws 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:

InvalidRangeException

inValues
```
public static Array inValues(Array a,
                             java.util.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(Array a)
```
Check if the array contains NaN value

参数:

a - Input array

返回:

Boolean

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

参数:

a - The array

返回:

The array withou NaN values

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

参数:

a - The arrays

返回:

The array withou NaN values

bitAnd

public static Array bitAnd(Array a,
                           java.lang.Number b)

Bit and operation

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

bitAnd

public static Array bitAnd(Array a,
                           Array b)

Bit and operation

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

bitOr

public static Array bitOr(Array a,
                          java.lang.Number b)

Bit or | operation

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

bitOr

public static Array bitOr(Array a,
                          Array b)

Bit or | operation

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

bitXor

public static Array bitXor(Array a,
                           java.lang.Number b)

Bit exclusive or ^ operation

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

bitXor

public static Array bitXor(Array a,
                           Array b)

Bit exclusive or | operation

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

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

参数:

a - Array a

返回:

Result array

logicalNot
```
public static Array logicalNot(Array a)
```
Logical not

参数:

a - Array a

返回:

Result array

leftShift

public static Array leftShift(Array a,
                              java.lang.Number b)

Bit left shift operation

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

leftShift

public static Array leftShift(Array a,
                              Array b)

Bit left shift operation

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

rightShift

public static Array rightShift(Array a,
                               java.lang.Number b)

Bit right shift operation

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

rightShift

public static Array rightShift(Array a,
                               Array b)

Bit right shift operation

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

trapz
```
public static double trapz(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(Array y,
                           double dx,
                           java.util.List<Range> ranges)
                    throws 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:

InvalidRangeException

trapz
```
public static double trapz(Array y,
                           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(Array y,
                           Array x,
                           java.util.List<Range> ranges)
                    throws 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:

InvalidRangeException

trapz

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

Integrate vector array using the composite trapezoidal rule.

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

trapz

public static Array trapz(Array a,
                          Array x,
                          int axis)
                   throws 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:: InvalidRangeException

sign
```
public static Array sign(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 Array dot(Array a,
                        Array b)

Matrix multiplication

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

vdot

public static double vdot(Array a,
                          Array b)

Return the dot product of two vectors.

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

outer

public static Array outer(Array a,
                          Array b)

Compute the outer product of two vectors.

参数:: a - Vector a; b - Vector b
返回:: The outer product

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

参数:

a - Array a

返回:

Result array

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

参数:

a - Array a

返回:

Result array

sin
```
public static Array sin(Array a)
```
Sine function

参数:

a - Array a

返回:

Result array

cos
```
public static Array cos(Array a)
```
Cosine function

参数:

a - Array a

返回:

Result array

tan
```
public static Array tan(Array a)
```
Tangent function

参数:

a - Array a

返回:

Result array

asin
```
public static Array asin(Array a)
```
Arc sine function

参数:

a - Array a

返回:

Result array

acos
```
public static Array acos(Array a)
```
Arc cosine function

参数:

a - Array a

返回:

Result array

atan
```
public static Array atan(Array a)
```
Arc tangen function

参数:

a - Array a

返回:

Result array

atan2

public static Array atan2(Array a,
                          Array b)

Arc tangen function

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

cartesianToPolar

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

Convert cartesian to polar coordinate

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

polarToCartesian

public static Array[] polarToCartesian(Array B,
                                       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 Array copy(Array a)
```
Copy array

参数:

a - Input array

返回:

Copied array

section

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

Section array

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

section

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

Section array

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

take

public static Array take(Array a,
                         Array condition)

Extract 1D array by boolean array

参数:: a - The data array; condition - The boolean array
返回:: Extracted array

take
```
public static Array take(Array a,
                         Array indices,
                         java.lang.Integer axis)
                  throws InvalidRangeException
```
Take elements from an array along an axis.

参数:

a - The array

indices - The indices of the values to extract.

axis - The axis over which to select values.

返回:

The returned array has the same type as a.

抛出:

InvalidRangeException

take
```
public static Array take(Array a,
                         java.util.List<java.lang.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 Array takeValues(Array a,
                               java.util.List<java.util.List<java.lang.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 Array setSection(Array a,
                               java.util.List<Range> ranges,
                               java.lang.Number v)
                        throws InvalidRangeException

Set section

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

setSection

public static Array setSection(Array a,
                               java.util.List<Range> ranges,
                               java.lang.Object v)
                        throws InvalidRangeException

Set section

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

setSection

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

Set section

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

setSection

public static Array setSection(Array a,
                               int[] origin,
                               int[] shape,
                               Array v)
                        throws InvalidRangeException

Set section

参数:: a - Array a; origin - Origin; shape - Shape; v - Array value
返回:: Result array
抛出:: InvalidRangeException

setSection_Mix

public static Array setSection_Mix(Array a,
                                   java.util.List<java.lang.Object> ranges,
                                   java.lang.Number v)

Set section

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

setSection_Mix_Bak

public static Array setSection_Mix_Bak(Array a,
                                       java.util.List<java.lang.Object> ranges,
                                       java.lang.Number v)

Set section

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

setSection_Mix

public static Array setSection_Mix(Array a,
                                   java.util.List<java.lang.Object> ranges,
                                   Array v)

Set section

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

setSection_Mix_Bak

public static Array setSection_Mix_Bak(Array a,
                                       java.util.List<java.lang.Object> ranges,
                                       Array v)

Set section

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

setSection_List

public static Array setSection_List(Array a,
                                    java.util.List<java.util.List<java.lang.Integer>> ranges,
                                    java.lang.Number v)

Set section

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

setSection_List

public static Array setSection_List(Array a,
                                    java.util.List<java.util.List<java.lang.Integer>> ranges,
                                    Array v)

Set section

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

flip

public static Array flip(Array a,
                         java.util.List<java.lang.Integer> idxs)

Flip array

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

flip

public static Array flip(Array a,
                         int idx)

Flip array

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

transpose

public static Array transpose(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 Array rot90(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 Array join(Array a,
                         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(Array a)
```
Get minimum value

参数:

a - Array a

返回:

Minimum value

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

参数:

a - Array a

返回:

Maximum value

getMinimum

public static double getMinimum(Array a,
                                double missingv)

Get minimum value

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

getMaximum

public static double getMaximum(Array a,
                                double missingv)

Get maximum value

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

min
```
public static java.lang.Number min(Array a)
```
Compute minimum value of an array

参数:

a - Array a

返回:

Minimum value

min
```
public static Array min(Array a,
                        int axis)
                 throws 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:

InvalidRangeException

min

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

Compute minimum value of an array

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

max
```
public static java.lang.Number max(Array a)
```
Compute maximum value of an array

参数:

a - Array a

返回:

Maximum value

max
```
public static Array max(Array a,
                        int axis)
                 throws 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:

InvalidRangeException

max

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

Compute maximum value of an array

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

sum
```
public static Array sum(Array a,
                        int axis)
                 throws 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:

InvalidRangeException

sum

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

Compute sum value of an array

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

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

参数:

alist - list of arrays

返回:

Sum array

sum
```
public static java.lang.Number sum(Array a)
```
Summarize array

参数:

a - Array a

返回:

Summarize value

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

参数:

a - Array a

missingValue - Missing value

返回:

Summarize value

cumsum
```
public static Array cumsum(Array a,
                           int axis)
                    throws InvalidRangeException
```
Return the cumulative sum of the elements along a given axis.

参数:

a - Array a

axis - Axis

返回:

Sum value array

抛出:

InvalidRangeException

cumsum

public static java.util.List<java.lang.Double> cumsum(Array a,
                                                      java.util.List<Range> ranges)
                                               throws InvalidRangeException

Compute cumulative sum value of an array

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

binCount
```
public static Array binCount(Array a)
```
Count number of occurrences of each value in array of non-negative ints

参数:

a - The array

返回:

The result of binning the input array

binCount
```
public static Array binCount(Array a,
                             Array weights)
```
Count number of occurrences of each value in array of non-negative ints

参数:

a - The array

weights - The weights

返回:

The result of binning the input array

prodDouble
```
public static double prodDouble(Array a)
```
Produce array

参数:

a - Array a

返回:

Produce value

aveDouble
```
public static double aveDouble(Array a)
```
Average array

参数:

a - Array a

返回:

Average value

aveDouble
```
public static double aveDouble(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(Array a)
                  throws InvalidRangeException
```
Get the index of the minimum value into the flattened array.

参数:

a - Array a

返回:

Minimum value index

抛出:

InvalidRangeException

argMin

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

Get the indices of the minimum values along an axis.

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

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

参数:

a - Array a

返回:

Maximum value index

抛出:

InvalidRangeException

argMax

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

Get the indices of the maximum values along an axis.

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

mean
```
public static Array mean(Array a,
                         int axis)
                  throws 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:

InvalidRangeException

mean

public static Array mean(Array a,
                         java.util.List<java.lang.Integer> axis)
                  throws 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:: InvalidRangeException

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

参数:

a - Array a

返回:

Mean value

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

参数:

alist - list of arrays

返回:

Mean array

meanRange

public static double meanRange(Array a,
                               java.util.List<Range> ranges)
                        throws InvalidRangeException

Compute mean value of an array by ranges

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

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

参数:

a - Array a

axis - Axis

ddof - Means delta degree of freedom

返回:

Standard deviation value array

抛出:

InvalidRangeException

std

public static double std(Array a,
                         java.util.List<Range> ranges,
                         int ddof)
                  throws InvalidRangeException

Compute standard deviation value of an array

参数:: a - Array a; ranges - Range list; ddof - Means delta degree of freedom
返回:: Standard deviation value
抛出:: InvalidRangeException

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

参数:

a - Array a

返回:

Standard deviation value

抛出:

InvalidRangeException

std
```
public static double std(Array a,
                         int ddof)
                  throws InvalidRangeException
```
Compute standard deviation value of an array

参数:

a - Array a

ddof - Means delta degree of freedom

返回:

Standard deviation value

抛出:

InvalidRangeException

var
```
public static double var(Array a,
                         int ddof)
                  throws InvalidRangeException
```
Compute variance value of an array

参数:

a - Array a

ddof - Means delta degree of freedom

返回:

Variance value

抛出:

InvalidRangeException

var
```
public static Array var(Array a,
                        int axis,
                        int ddof)
                 throws InvalidRangeException
```
Compute variance value of an array along an axis (dimension)

参数:

a - Array a

axis - Axis

ddof - Means delta degree of freedom

返回:

Variance value array

抛出:

InvalidRangeException

var

public static double var(Array a,
                         java.util.List<Range> ranges,
                         int ddof)
                  throws InvalidRangeException

Compute variance value of an array

参数:: a - Array a; ranges - Range list; ddof - Means delta degree of freedom
返回:: Variance value
抛出:: InvalidRangeException

median
```
public static Array median(Array a,
                           int axis)
                    throws 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:

InvalidRangeException

median

public static double median(java.util.List<java.lang.Double> aDataList)

Median funtion

参数:: aDataList - The data list
返回:: Median

minimum

public static double minimum(java.util.List<java.lang.Double> aDataList)

Minimum function

参数:: aDataList - The data list
返回:: Minimum

maximum

public static double maximum(java.util.List<java.lang.Double> aDataList)

Maximum function

参数:: aDataList - The data list
返回:: Maximum

quantile

public static double quantile(java.util.List<java.lang.Double> aDataList,
                              int aNum)

Quantile function

参数:: aDataList - The data list; aNum - Quantile index
返回:: Quantile value

quantile
```
public static double quantile(Array a,
                              int aNum)
```
Quantile function

参数:

a - The data array

aNum - Quantile index

返回:

Quantile value

median

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

Compute median value of an array

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

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

参数:

a - Array a

返回:

Median value

maximum
```
public static Array maximum(Array x1,
                            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 Array fmax(Array x1,
                         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 Array minimum(Array x1,
                            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 Array fmin(Array x1,
                         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 Array rolling_mean(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(Array a,
                                java.lang.Number missingv)

Set missing value to NaN

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

setValue

public static void setValue(Array a,
                            Array b,
                            java.lang.Number value)

Set value

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

setValue

public static void setValue(Array a,
                            Array b,
                            Array value)

Set value

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

place

public static void place(Array a,
                         Array b,
                         Array value)

Change elements of an array based on conditional and input values.

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

replaceValue

public static void replaceValue(Array a,
                                java.lang.Object oValue,
                                java.lang.Object value)

Replace value

参数:: a - Array a; oValue - Replaced value; value - New value

asList

public static java.util.List<java.lang.Object> asList(Array a)

As number list

参数:: a - Array a
返回:: Result number list

doubleToNumber

public static java.lang.Number doubleToNumber(double v,
                                              DataType dt)

Convert double to number by data type

参数:: v - Double value; dt - Data type
返回:: Number

maskout

public static Array maskout(Array a,
                            Array m,
                            java.lang.Number missingValue)

Maskout function

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

maskout

public static Array maskout(Array a,
                            Array m)

Maskout function

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

maskin

public static Array maskin(Array a,
                           Array m)

Maskin function

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

getR
```
public static float getR(java.util.List<java.lang.Number> xData,
                         java.util.List<java.lang.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(Array xData,
                         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(java.util.List<java.lang.Number> xData,
                                        java.util.List<java.lang.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(java.util.List<java.lang.Number> xData,
                                   java.util.List<java.lang.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(Array xData,
                                   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 Array polyVal(java.util.List<java.lang.Number> p,
                            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 Array cdiff(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 Array cdiff_bak(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 Array hcurl(Array uData,
                          Array vData,
                          java.util.List<java.lang.Number> xx,
                          java.util.List<java.lang.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

hcurl

public static Array hcurl(Array uData,
                          Array vData,
                          Array xx,
                          Array 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 Array hdivg(Array uData,
                          Array vData,
                          java.util.List<java.lang.Number> xx,
                          java.util.List<java.lang.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

hdivg

public static Array hdivg(Array uData,
                          Array vData,
                          Array xx,
                          Array 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 Array magnitude(Array uData,
                              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

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

sub

sub

sub

sub

sub

mul

mul

mul

div

div

div

div

div

mod

mod

mod

floorDiv

floorDiv

floorDiv

pow

pow

pow

pow

pow

sqrt

exp

log

log10

abs

ceil

floor

equal

equal

equal

isClose

isClose

isClose

isClose

isInfinite

isFinite

lessThan

lessThan

lessThanOrEqual

lessThanOrEqual

greaterThan

greaterThan

greaterThanOrEqual

greaterThanOrEqual

notEqual

notEqual

any

any

all

all

inValues

containsNaN

removeNaN

removeNaN

bitAnd

bitAnd

bitOr