程序包 org.meteoinfo.ndarray.math

类 ArrayUtil

java.lang.Object

org.meteoinfo.ndarray.math.ArrayUtil

public class ArrayUtil
extends java.lang.Object

作者:

yaqiang

构造器概要

构造器

构造器	说明
ArrayUtil()

方法概要

修饰符和类型	方法	说明
static Array	argSort(Array a, java.lang.Integer axis)	Get sorted array index along an axis
static Array	array(java.lang.Object data)	Create an array
static Array	array(java.lang.Object data, DataType dt)	Create an array
static Array	array_list(java.util.List data, DataType dt)	Create an array
static Array	arrayRange(java.lang.Number start, java.lang.Number stop, java.lang.Number step)	Array range
static Array	arrayRange_bak(java.lang.Number start, java.lang.Number stop, java.lang.Number step)	Array range
static Array	arrayRange1(java.lang.Number start, int length, java.lang.Number step)	Array range
static java.util.List<Array>	arraySplit(Array a, int sections, int axis)
static Array	broadcast(Array a, int[] shape)	Broadcast array to a new shape
static Array	broadcast(Array a, java.util.List<java.lang.Integer> shape)	Broadcast array to a new shape
static int[]	broadcastShapes(java.util.List<java.util.List<java.lang.Integer>> shapes)	Broadcast shape list to a new shape
static Array	concatenate(java.util.List<Array> arrays, java.lang.Integer axis)	Concatenate arrays to one array along a axis
static Array	concatenate(Array a, Array b, java.lang.Integer axis)	Concatenate two arrays to one array along a axis
static Array	convertEncoding(ArrayChar a, java.lang.String encoding)	Convert char array encoding from UTF-8
static java.lang.String	convertToString(Array a)	Array to string
protected static void	copyTo1DJavaArray(IndexIterator iter, java.lang.Object javaArray)
protected static void	copyTo1DJavaArray(IndexIterator iter, java.lang.Object javaArray, double missingValue)
protected static void	copyTo1DJavaArray_Long(IndexIterator iter, java.lang.Object javaArray)
static java.lang.Object	copyToNDJavaArray(Array a)	Convert array to N-Dimension double Java array
static java.lang.Object	copyToNDJavaArray(Array a, java.lang.String dtype)	Convert array to N-Dimension double Java array
static java.lang.Object	copyToNDJavaArray_Double(Array a)	Convert array to N-Dimension double Java array
static java.lang.Object	copyToNDJavaArray_Double(Array a, double missingValue)	Convert array to N-Dimension double Java array
static java.lang.Object	copyToNDJavaArray_Long(Array a)	Convert array to N-Dimension double Java array
static org.meteoinfo.common.io.EndianDataOutputStream	createBinFile(java.lang.String fn)	Create a binary file
static Array	cressman(java.util.List<java.lang.Number> x_s, java.util.List<java.lang.Number> y_s, Array v_s, java.util.List<java.lang.Number> X, java.util.List<java.lang.Number> Y, java.util.List<java.lang.Number> radList)	Cressman analysis
static Array	cressman_bak(java.util.List<java.lang.Number> x_s, java.util.List<java.lang.Number> y_s, Array v_s, java.util.List<java.lang.Number> X, java.util.List<java.lang.Number> Y, java.util.List<java.lang.Number> radList)	Cressman analysis
static java.lang.String	dataTypeString(DataType dt)	Get data type string
static Array	delete(Array a, int idx, int axis)	Return a new array with sub-arrays along an axis deleted
static Array	delete(Array a, java.util.List<java.lang.Integer> idx, int axis)	Return a new array with sub-arrays along an axis deleted
static Array	diag(Array a, int k)	Extract a diagonal or construct a diagonal array.
static Array	empty(java.util.List<java.lang.Integer> shape, DataType dtype)	Get zero array
static Array[]	extendHalfCell(Array x, Array y)	Extend the grid to half cell, so the grid points are the centers of the cells
static Array	eye(int n, int m, int k, DataType dtype)	Return a 2-D array with ones on the diagonal and zeros elsewhere.
static java.lang.Object[]	findIndices(java.util.List<java.util.List<java.lang.Number>> points, java.util.List<java.lang.Number> xi)	Find indices
static java.lang.Object[]	findIndices(java.util.List<Array> points, Array xi)	Find indices
static Array	flatNonZero(Array a)	Return the flat indices of the elements that are non-zero.
static Array	full(java.util.List<java.lang.Integer> shape, java.lang.Object fillValue, DataType dtype)	Return a new array of given shape and type, filled with fill value.
static Array	full(java.util.List<java.lang.Integer> shape, Array fillValue, DataType dtype)	Return a new array of given shape and type, filled with fill value.
static int	getDimIndex(Array dim, java.lang.Number v)	Get value index in a dimension array
static java.lang.String	getString(ArrayChar a, java.lang.String encoding)	Get string from a char array
static int[]	gridIndex(double[][] xdim, double[][] ydim, double x, double y)	Get grid array x/y value index
static int[]	gridIndex(Array xdim, Array ydim, double x, double y)	Get grid array x/y value index
static java.util.List<Array>	histogram(Array a, double[] bins)	Histogram x/y array
static java.util.List<Array>	histogram(Array a, int nbins)	Histogram x/y array
static java.util.List<Array>	histogram(Array a, Array bins)	Histogram x/y array
static Array	identity(int n, DataType dtype)	Return the identity array - a square array with ones on the main diagonal.
static Array	interpn(java.util.List<Array> points, Array values, java.util.List<Array> xi)	Multidimensional interpolation on regular grids.
static java.lang.Object	interpn(java.util.List<Array> points, Array values, Array xi)	Multidimensional interpolation on regular grids.
static double	interpn_s(java.util.List<java.util.List<java.lang.Number>> points, Array values, java.util.List<java.lang.Number> xi)	Multidimensional interpolation on regular grids.
static double	interpn_s(java.util.List<Array> points, Array values, Array xi)	Multidimensional interpolation on regular grids.
Array	interpolate(Array a, java.util.List<java.lang.Number> X, java.util.List<java.lang.Number> Y)	Interpolate array data
static Array	interpolate_1d(double x, Array xp, Array a, int axis)	Interpolates data with any shape over a specified axis.
static Array	interpolate_1d(Array xa, Array xp, Array a, int axis)	Interpolates data with any shape over a specified axis.
static Array	interpolation_Inside(java.util.List<java.lang.Number> x_s, java.util.List<java.lang.Number> y_s, Array a, java.util.List<java.lang.Number> X, java.util.List<java.lang.Number> Y)	Interpolate with inside method - The grid cell value is the average value of the inside points or fill value if no inside point.
static java.lang.Object	interpolation_Inside_Count(java.util.List<java.lang.Number> x_s, java.util.List<java.lang.Number> y_s, java.util.List<java.lang.Number> X, java.util.List<java.lang.Number> Y, boolean pointDensity, boolean centerPoint)	Interpolate with inside method - The grid cell value is the count number of the inside points or fill value if no inside point.
static Array	interpolation_Inside_Max(java.util.List<java.lang.Number> x_s, java.util.List<java.lang.Number> y_s, Array a, java.util.List<java.lang.Number> X, java.util.List<java.lang.Number> Y)	Interpolate with inside method - The grid cell value is the maximum value of the inside points or fill value if no inside point.
static Array	interpolation_Inside_Mean(Array x_s, Array y_s, Array a, Array X, Array Y, boolean center)	Interpolate with inside method - The grid cell value is the average value of the inside points or fill value if no inside point.
static Array	interpolation_Inside_Min(java.util.List<java.lang.Number> x_s, java.util.List<java.lang.Number> y_s, Array a, java.util.List<java.lang.Number> X, java.util.List<java.lang.Number> Y)	Interpolate with inside method - The grid cell value is the minimum value of the inside points or fill value if no inside point.
static Array	interpolation_Nearest_1(java.util.List<java.lang.Number> x_s, java.util.List<java.lang.Number> y_s, Array a, java.util.List<java.lang.Number> X, java.util.List<java.lang.Number> Y, double radius, double fill_value)	Interpolate with nearest method
static Array	interpolation_Nearest_bak(java.util.List<java.lang.Number> x_s, java.util.List<java.lang.Number> y_s, Array a, java.util.List<java.lang.Number> X, java.util.List<java.lang.Number> Y, double radius)	Interpolate with nearest method
static Array	lineSpace(java.lang.Number start, java.lang.Number stop, int n, boolean endpoint)	Array line space
static Array	lineSpace_bak(java.lang.Number start, java.lang.Number stop, int n, boolean endpoint)	Array line space
static Array	linint2(Array a, Array X, Array Y, Array newX, Array newY)	Interpolates from a rectilinear grid to another rectilinear grid using bilinear interpolation.
static DataType	mergeDataType(DataType dt1, DataType dt2)	Merge data type to one data type
static Array[]	meshgrid(Array x)	Mesh grid
static Array[]	meshgrid(Array... xs)	Mesh grid
static Array[]	meshgrid(Array x, Array y)	Mesh grid
static java.util.List<Array>	nonzero(Array a)	Return the indices of the elements that are non-zero.
static int	numASCIICol(java.lang.String fileName, java.lang.String delimiter, int headerLines)	Get row number of a ASCII file
static int	numASCIIRow(java.lang.String fileName)	Get row number of a ASCII file
static Array	ones(int n)	Get ones array
static Array	ones(java.util.List<java.lang.Integer> shape, DataType dtype)	Get ones array
static double	rand()	Get random value
static Array	rand(int n)	Get random array - one dimension
static Array	rand(java.util.List<java.lang.Integer> shape)	Get random array
static Array	readASCIIFile(java.lang.String fileName, java.lang.String delimiter, int headerLines, java.lang.String dataType, java.util.List<java.lang.Integer> shape, boolean readFirstCol)	Read ASCII data file to an array
static Array	readASCIIFile(java.lang.String fileName, java.lang.String delimiter, int headerLines, DataType dataType, java.util.List<java.lang.Integer> shape, boolean readFirstCol)	Read ASCII data file to an array
static Array	readASCIIFile(java.lang.String fileName, DataType dataType, int count, java.lang.String delimiter)	Read ASCII data file to an array
static Array	readBinFile(java.lang.String fn, java.util.List<java.lang.Integer> dims, java.lang.String dataType, int skip, java.lang.String byteOrder)	Read array from a binary file
static Array	readBinFile(java.lang.String fn, DataType dataType, int count, int offset)	Read array from a binary file
static Array	readBinFile(java.lang.String fn, DataType dataType, int count, int offset, java.lang.String byteOrder)	Read array from a binary file
static Array	repeat(java.lang.Number v, int n)	Repeat a value n times
static Array	repeat(Array a, java.util.List<java.lang.Integer> repeats)	Repeat elements of an array.
static Array	repeat(Array a, java.util.List<java.lang.Integer> repeats, int axis)	Repeat elements of an array.
static Array	resample_Bilinear(Array a, java.util.List<java.lang.Number> X, java.util.List<java.lang.Number> Y, java.util.List<java.lang.Number> newX, java.util.List<java.lang.Number> newY)	Resample grid array with bilinear method
static Array	resample_Bilinear(Array a, Array X, Array Y, Array newX, Array newY)	Resample grid array with bilinear method
static Array	resample_Neighbor(Array a, Array X, Array Y, Array newX, Array newY)	Resample grid array with neighbor method
static void	saveASCIIFile(java.lang.String fn, Array a, int colNum, java.lang.String format, java.lang.String delimiter)	Save an array data to a ASCII file
static void	saveBinFile(java.lang.String fn, Array a, java.lang.String byteOrder, boolean append, boolean sequential)	Save an array data to a binary file
static int	searchSorted(java.util.List<java.lang.Number> a, double v)	Search sorted list index
static int	searchSorted(Array a, double v)	Search sorted list index
static int	searchSorted(Array a, java.lang.Number v, boolean left)	Find indices where elements should be inserted to maintain order.
static Array	searchSorted(Array a, Array v, boolean left)	Find indices where elements should be inserted to maintain order.
static Array	slice(Array a, int axis, int idx)	Get slice array along an axis
static Array	slice(Array a, int axis, Array dim, double v)	Get slice array along an axis
static Array	smooth5(Array a)	Smooth with 5 points
static Array	smooth5(Array a, int rowNum, int colNum, double unDefData)	Smooth with 5 points
static Array	smooth9(Array a)	Smooth with 9 points
static Array	sort(Array a, java.lang.Integer axis)	Sort array along an axis
static Array	tile(java.lang.Number v, int n)	Repeat a value n times
static Array	tile(java.lang.Number v, java.util.List<java.lang.Integer> repeats)	Repeat a value n times
static Array	tile(Array a, java.util.List<java.lang.Integer> repeats)	Repeat elements of an array.
static Array	toBoolean(Array a)	Convert array to boolean type
static DataType	toDataType(java.lang.String dt)	To data type - ucar.ma2
static Array	toDate(Array a)	Convert array to date type
static Array	toDouble(Array a)	Convert array to double type
static Array	toFloat(Array a)	Convert array to float type
static Array	toInteger(Array a)	Convert array to integer type
static double	toStation(Array data, java.util.List<java.lang.Number> xArray, java.util.List<java.lang.Number> yArray, double x, double y)	Interpolate data to a station point
static double	toStation(Array data, java.util.List<java.lang.Number> xArray, java.util.List<java.lang.Number> yArray, double x, double y, double missingValue)	Interpolate data to a station point
static double	toStation(Array data, Array xArray, Array yArray, double x, double y)	Interpolate data to a station point
static double	toStation_Neighbor(Array data, java.util.List<java.lang.Number> xArray, java.util.List<java.lang.Number> yArray, double x, double y)	Interpolate data to a station point
static double	toStation_Neighbor(Array data, java.util.List<java.lang.Number> xArray, java.util.List<java.lang.Number> yArray, double x, double y, double missingValue)	Interpolate data to a station point
static double	toStation_Neighbor(Array data, Array xArray, Array yArray, double x, double y)	Interpolate data to a station point
static java.lang.String	toString_old(Array a)	Array to string
static Array	unique(Array a, java.lang.Integer axis)	Find the unique elements of an array.
static Array	view(Array a)	New view of array with the same data.
static void	writeBinFile(org.meteoinfo.common.io.EndianDataOutputStream outs, Array a, java.lang.String byteOrder, boolean sequential)	Save an array data to a binary file
static Array	zeros(int n)	Get zero array
static Array	zeros(java.util.List<java.lang.Integer> shape, java.lang.String dtype)	Get zero array
static Array	zeros(java.util.List<java.lang.Integer> shape, DataType dtype)	Get zero array

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

构造器详细资料

ArrayUtil

public ArrayUtil()

方法详细资料

readASCIIFile

public static Array readASCIIFile(java.lang.String fileName,
                                  java.lang.String delimiter,
                                  int headerLines,
                                  java.lang.String dataType,
                                  java.util.List<java.lang.Integer> shape,
                                  boolean readFirstCol)
                           throws java.io.UnsupportedEncodingException,
                                  java.io.FileNotFoundException,
                                  java.io.IOException

Read ASCII data file to an array

参数:

fileName - File name

delimiter - Delimiter

headerLines - Headerline number

dataType - Data type string

shape - Shape

readFirstCol - Read first column data or not

返回:

Result array

抛出:

java.io.UnsupportedEncodingException

java.io.FileNotFoundException

java.io.IOException

readASCIIFile

public static Array readASCIIFile(java.lang.String fileName,
                                  java.lang.String delimiter,
                                  int headerLines,
                                  DataType dataType,
                                  java.util.List<java.lang.Integer> shape,
                                  boolean readFirstCol)
                           throws java.io.UnsupportedEncodingException,
                                  java.io.FileNotFoundException,
                                  java.io.IOException

Read ASCII data file to an array

参数:

fileName - File name

delimiter - Delimiter

headerLines - Headerline number

dataType - Data type

shape - Shape

readFirstCol - Read first column data or not

返回:

Result array

抛出:

java.io.UnsupportedEncodingException

java.io.FileNotFoundException

java.io.IOException

readASCIIFile

public static Array readASCIIFile(java.lang.String fileName,
                                  DataType dataType,
                                  int count,
                                  java.lang.String delimiter)
                           throws java.io.UnsupportedEncodingException,
                                  java.io.FileNotFoundException,
                                  java.io.IOException

Read ASCII data file to an array

参数:

fileName - File name

dataType - Data type

count - Number of items to read

delimiter - Delimiter

返回:

Result array

抛出:

java.io.UnsupportedEncodingException

java.io.FileNotFoundException

java.io.IOException

numASCIIRow

public static int numASCIIRow(java.lang.String fileName)
                       throws java.io.FileNotFoundException

Get row number of a ASCII file

参数:

fileName - File name

返回:

Row number

抛出:

java.io.FileNotFoundException

numASCIICol

public static int numASCIICol(java.lang.String fileName,
                              java.lang.String delimiter,
                              int headerLines)
                       throws java.io.FileNotFoundException,
                              java.io.IOException

Get row number of a ASCII file

参数:

fileName - File name

delimiter -

headerLines -

返回:

Row number

抛出:

java.io.FileNotFoundException

java.io.IOException

createBinFile

public static org.meteoinfo.common.io.EndianDataOutputStream createBinFile(java.lang.String fn)
                                                                    throws java.io.IOException

Create a binary file

参数:

fn - The file path

返回:

EndianDataOutputStream

抛出:

java.io.IOException

writeBinFile

public static void writeBinFile(org.meteoinfo.common.io.EndianDataOutputStream outs,
                                Array a,
                                java.lang.String byteOrder,
                                boolean sequential)

Save an array data to a binary file

参数:

outs - EndianDataOutputStream

a - Array

byteOrder - Byte order

sequential - If write as sequential binary file - Fortran

saveBinFile

public static void saveBinFile(java.lang.String fn,
                               Array a,
                               java.lang.String byteOrder,
                               boolean append,
                               boolean sequential)

Save an array data to a binary file

参数:

fn - File path

a - Array

byteOrder - Byte order

append - If append to existing file

sequential - If write as sequential binary file - Fortran

saveASCIIFile

public static void saveASCIIFile(java.lang.String fn,
                                 Array a,
                                 int colNum,
                                 java.lang.String format,
                                 java.lang.String delimiter)
                          throws java.io.IOException

Save an array data to a ASCII file

参数:

fn - File path

a - Array

colNum - Column number of each line

format - String format

delimiter - Delimiter

抛出:

java.io.IOException

readBinFile

public static Array readBinFile(java.lang.String fn,
                                java.util.List<java.lang.Integer> dims,
                                java.lang.String dataType,
                                int skip,
                                java.lang.String byteOrder)

Read array from a binary file

参数:

fn - Binary file name

dims - Dimensions

dataType - Data type string

skip - Skip bytes

byteOrder - Byte order

返回:

Result array

readBinFile

public static Array readBinFile(java.lang.String fn,
                                DataType dataType,
                                int count,
                                int offset)
                         throws java.io.IOException

Read array from a binary file

参数:

fn - Binary file name

dataType - Data type

count - Number of items to read. -1 means all items (i.e., the complete file)

offset - Offset bytes

返回:

Result array

抛出:

java.io.IOException

readBinFile

public static Array readBinFile(java.lang.String fn,
                                DataType dataType,
                                int count,
                                int offset,
                                java.lang.String byteOrder)
                         throws java.io.IOException

Read array from a binary file

参数:

fn - Binary file name

dataType - Data type

count - Number of items to read. -1 means all items (i.e., the complete file)

offset - Offset bytes

byteOrder - Byte order

返回:

Result array

抛出:

java.io.IOException

array

public static Array array(java.lang.Object data)

Create an array

参数:

data - Object

返回:

Array

array

public static Array array(java.lang.Object data,
                          DataType dt)

Create an array

参数:

data - Object

dt - Data type

返回:

Array

array_list

public static Array array_list(java.util.List data,
                               DataType dt)

Create an array

参数:

data - Array like data

dt - Data type

返回:

Array

view

public static Array view(Array a)

New view of array with the same data.

参数:

a - Input array

返回:

View array

arrayRange_bak

public static Array arrayRange_bak(java.lang.Number start,
                                   java.lang.Number stop,
                                   java.lang.Number step)

Array range

参数:

start - Start value

stop - Stop value

step - Step value

返回:

Array

arrayRange

public static Array arrayRange(java.lang.Number start,
                               java.lang.Number stop,
                               java.lang.Number step)

Array range

参数:

start - Start value

stop - Stop value

step - Step value

返回:

Array

arrayRange1

public static Array arrayRange1(java.lang.Number start,
                                int length,
                                java.lang.Number step)

Array range

参数:

start - Start value

length - Length

step - Step value

返回:

Array

lineSpace

public static Array lineSpace(java.lang.Number start,
                              java.lang.Number stop,
                              int n,
                              boolean endpoint)

Array line space

参数:

start - Start value

stop - Stop value

n - Number value

endpoint - If stop is included

返回:

Array

lineSpace_bak

public static Array lineSpace_bak(java.lang.Number start,
                                  java.lang.Number stop,
                                  int n,
                                  boolean endpoint)

Array line space

参数:

start - Start value

stop - Stop value

n - Number value

endpoint - If stop is included

返回:

Array

zeros

public static Array zeros(int n)

Get zero array

参数:

n - Number

返回:

Array

zeros

public static Array zeros(java.util.List<java.lang.Integer> shape,
                          java.lang.String dtype)

Get zero array

参数:

shape - Shape

dtype - Data type

返回:

Array Result array

zeros

public static Array zeros(java.util.List<java.lang.Integer> shape,
                          DataType dtype)

Get zero array

参数:

shape - Shape

dtype - Data type

返回:

Array Result array

empty

public static Array empty(java.util.List<java.lang.Integer> shape,
                          DataType dtype)

Get zero array

参数:

shape - Shape

dtype - Data type

返回:

Array Result array

full

public static Array full(java.util.List<java.lang.Integer> shape,
                         java.lang.Object fillValue,
                         DataType dtype)

Return a new array of given shape and type, filled with fill value.

参数:

shape - Shape

fillValue - Fill value

dtype - Data type

返回:

Array Result array

full

public static Array full(java.util.List<java.lang.Integer> shape,
                         Array fillValue,
                         DataType dtype)

Return a new array of given shape and type, filled with fill value.

参数:

shape - Shape

fillValue - Fill value array

dtype - Data type

返回:

Array Result array

ones

public static Array ones(int n)

Get ones array

参数:

n - Number

返回:

Array Result array

ones

public static Array ones(java.util.List<java.lang.Integer> shape,
                         DataType dtype)

Get ones array

参数:

shape - Shape

dtype - Data type

返回:

Array Result array

identity

public static Array identity(int n,
                             DataType dtype)

Return the identity array - a square array with ones on the main diagonal.

参数:

n - Number of rows (and columns) in n x n output.

dtype - Data type

返回:

Identity array

eye

public static Array eye(int n,
                        int m,
                        int k,
                        DataType dtype)

Return a 2-D array with ones on the diagonal and zeros elsewhere.

参数:

n - Number of rows in the output.

m - Number of columns in the output.

k - Index of the diagonal: 0 (the default) refers to the main diagonal, a positive value refers to an upper diagonal, and a negative value to a lower diagonal.

dtype - Data type

返回:

Created array

diag

public static Array diag(Array a,
                         int k)

Extract a diagonal or construct a diagonal array.

参数:

a - If a is a 2-D array, return a copy of its k-th diagonal. If a is a 1-D array, return a 2-D array with a on the k-th diagonal.

k - Diagonal in question.

返回:

Diagonal array

repeat

public static Array repeat(java.lang.Number v,
                           int n)

Repeat a value n times

参数:

v - The value

n - N times

返回:

Repeated array

repeat

public static Array repeat(Array a,
                           java.util.List<java.lang.Integer> repeats)

Repeat elements of an array.

参数:

a - The value

repeats - The number of repetitions for each element

返回:

Repeated array

repeat

public static Array repeat(Array a,
                           java.util.List<java.lang.Integer> repeats,
                           int axis)

Repeat elements of an array.

参数:

a - The value

repeats - The number of repetitions for each element

axis - The axis

返回:

Repeated array

tile

public static Array tile(java.lang.Number v,
                         int n)

Repeat a value n times

参数:

v - The value

n - N times

返回:

Repeated array

tile

public static Array tile(java.lang.Number v,
                         java.util.List<java.lang.Integer> repeats)

Repeat a value n times

参数:

v - The value

repeats - The number of repetitions for each element

返回:

Repeated array

tile

public static Array tile(Array a,
                         java.util.List<java.lang.Integer> repeats)

Repeat elements of an array.

参数:

a - The value

repeats - The number of repetitions for each element

返回:

Repeated array

rand

public static double rand()

Get random value

返回:

Random value

rand

public static Array rand(int n)

Get random array - one dimension

参数:

n - Array length

返回:

Result array

rand

public static Array rand(java.util.List<java.lang.Integer> shape)

Get random array

参数:

shape - Shape

返回:

Array Result array

mergeDataType

public static DataType mergeDataType(DataType dt1,
                                     DataType dt2)

Merge data type to one data type

参数:

dt1 - Data type 1

dt2 - Data type 2

返回:

Merged data type

nonzero

public static java.util.List<Array> nonzero(Array a)

Return the indices of the elements that are non-zero.

参数:

a - Input array

返回:

Indices

flatNonZero

public static Array flatNonZero(Array a)

Return the flat indices of the elements that are non-zero.

参数:

a - Input array

返回:

Flat indices

convertToString

public static java.lang.String convertToString(Array a)

Array to string

参数:

a - Array a

返回:

String

toString_old

public static java.lang.String toString_old(Array a)

Array to string

参数:

a - Array a

返回:

String

dataTypeString

public static java.lang.String dataTypeString(DataType dt)

Get data type string

参数:

dt - The data type

返回:

Data type string

toDataType

public static DataType toDataType(java.lang.String dt)

To data type - ucar.ma2

参数:

dt - Data type string

返回:

Data type

toInteger

public static Array toInteger(Array a)

Convert array to integer type

参数:

a - Array a

返回:

Result array

toFloat

public static Array toFloat(Array a)

Convert array to float type

参数:

a - Array a

返回:

Result array

toDouble

public static Array toDouble(Array a)

Convert array to double type

参数:

a - Array a

返回:

Result array

toBoolean

public static Array toBoolean(Array a)

Convert array to boolean type

参数:

a - Array a

返回:

Result array

toDate

public static Array toDate(Array a)

Convert array to date type

参数:

a - Array a

返回:

Result array

convertEncoding

public static Array convertEncoding(ArrayChar a,
                                    java.lang.String encoding)

Convert char array encoding from UTF-8

参数:

a - Char array

encoding - The encoding convert to

返回:

Converted array

getString

public static java.lang.String getString(ArrayChar a,
                                         java.lang.String encoding)

Get string from a char array

参数:

a - Char array

encoding - The encoding convert to

返回:

The string

concatenate

public static Array concatenate(java.util.List<Array> arrays,
                                java.lang.Integer axis)
                         throws InvalidRangeException

Concatenate arrays to one array along a axis

参数:

arrays - Array list

axis - The axis

返回:

Concatenated array

抛出:

InvalidRangeException

concatenate

public static Array concatenate(Array a,
                                Array b,
                                java.lang.Integer axis)
                         throws InvalidRangeException

Concatenate two arrays to one array along a axis

参数:

a - Array a

b - Array b

axis - The axis

返回:

Concatenated array

抛出:

InvalidRangeException

arraySplit

public static java.util.List<Array> arraySplit(Array a,
                                               int sections,
                                               int axis)

sort

public static Array sort(Array a,
                         java.lang.Integer axis)
                  throws InvalidRangeException

Sort array along an axis

参数:

a - Array a

axis - The axis

返回:

Sorted array

抛出:

InvalidRangeException

argSort

public static Array argSort(Array a,
                            java.lang.Integer axis)
                     throws InvalidRangeException

Get sorted array index along an axis

参数:

a - Array a

axis - The axis

返回:

Index of sorted array

抛出:

InvalidRangeException

searchSorted

public static int searchSorted(Array a,
                               java.lang.Number v,
                               boolean left)

Find indices where elements should be inserted to maintain order.

参数:

a - Input array

v - Value

left - Left side or right side

返回:

indices

searchSorted

public static Array searchSorted(Array a,
                                 Array v,
                                 boolean left)

Find indices where elements should be inserted to maintain order.

参数:

a - Input array

v - Value array

left - Left side or right side

返回:

indices

unique

public static Array unique(Array a,
                           java.lang.Integer axis)
                    throws InvalidRangeException

Find the unique elements of an array.

参数:

a - Array a

axis - The axis

返回:

The sorted unique elements of an array

抛出:

InvalidRangeException

copyToNDJavaArray

public static java.lang.Object copyToNDJavaArray(Array a,
                                                 java.lang.String dtype)

Convert array to N-Dimension double Java array

参数:

a - Array a

dtype - Data type string

返回:

N-D Java array

copyToNDJavaArray

public static java.lang.Object copyToNDJavaArray(Array a)

Convert array to N-Dimension double Java array

参数:

a - Array a

返回:

N-D Java array

copyToNDJavaArray_Long

public static java.lang.Object copyToNDJavaArray_Long(Array a)

Convert array to N-Dimension double Java array

参数:

a - Array a

返回:

N-D Java array

copyToNDJavaArray_Double

public static java.lang.Object copyToNDJavaArray_Double(Array a)

Convert array to N-Dimension double Java array

参数:

a - Array a

返回:

N-D Java array

copyToNDJavaArray_Double

public static java.lang.Object copyToNDJavaArray_Double(Array a,
                                                        double missingValue)

Convert array to N-Dimension double Java array

参数:

a - Array a

missingValue - The missing value

返回:

N-D Java array

copyTo1DJavaArray

protected static void copyTo1DJavaArray(IndexIterator iter,
                                        java.lang.Object javaArray)

copyTo1DJavaArray

protected static void copyTo1DJavaArray(IndexIterator iter,
                                        java.lang.Object javaArray,
                                        double missingValue)

copyTo1DJavaArray_Long

protected static void copyTo1DJavaArray_Long(IndexIterator iter,
                                             java.lang.Object javaArray)

delete

public static Array delete(Array a,
                           int idx,
                           int axis)

Return a new array with sub-arrays along an axis deleted

参数:

a - Input array

idx - Index

axis - The axis

返回:

delete

public static Array delete(Array a,
                           java.util.List<java.lang.Integer> idx,
                           int axis)

Return a new array with sub-arrays along an axis deleted

参数:

a - Input array

idx - Index

axis - The axis

返回:

histogram

public static java.util.List<Array> histogram(Array a,
                                              int nbins)

Histogram x/y array

参数:

a - Data array

nbins - bin number

返回:

X/Y arrays

histogram

public static java.util.List<Array> histogram(Array a,
                                              Array bins)

Histogram x/y array

参数:

a - Data array

bins - bin edges

返回:

X/Y arrays

histogram

public static java.util.List<Array> histogram(Array a,
                                              double[] bins)

Histogram x/y array

参数:

a - Data array

bins - bin edges

返回:

X/Y arrays

broadcastShapes

public static int[] broadcastShapes(java.util.List<java.util.List<java.lang.Integer>> shapes)

Broadcast shape list to a new shape

参数:

shapes - The shape list

返回:

Result shape

broadcast

public static Array broadcast(Array a,
                              int[] shape)

Broadcast array to a new shape

参数:

a - Array a

shape - Shape

返回:

Result array

broadcast

public static Array broadcast(Array a,
                              java.util.List<java.lang.Integer> shape)

Broadcast array to a new shape

参数:

a - Array a

shape - Shape

返回:

Result array

meshgrid

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

Mesh grid

参数:

x - X array - vector

y - Y array - vector

返回:

Result arrays - matrix

meshgrid

public static Array[] meshgrid(Array x)

Mesh grid

参数:

x - X array - vector

返回:

Result arrays - matrix

meshgrid

public static Array[] meshgrid(Array... xs)

Mesh grid

参数:

xs - X arrays

返回:

Result arrays - matrix

smooth5

public static Array smooth5(Array a,
                            int rowNum,
                            int colNum,
                            double unDefData)

Smooth with 5 points

参数:

a - Array

rowNum - Row number

colNum - Column number

unDefData - Missing value

返回:

Result array

smooth5

public static Array smooth5(Array a)

Smooth with 5 points

参数:

a - Array

返回:

Result array

smooth9

public static Array smooth9(Array a)

Smooth with 9 points

参数:

a - Array

返回:

Result array

interpolation_Nearest_1

public static Array interpolation_Nearest_1(java.util.List<java.lang.Number> x_s,
                                            java.util.List<java.lang.Number> y_s,
                                            Array a,
                                            java.util.List<java.lang.Number> X,
                                            java.util.List<java.lang.Number> Y,
                                            double radius,
                                            double fill_value)

Interpolate with nearest method

参数:

x_s - scatter X array

y_s - scatter Y array

a - scatter value array

X - x coordinate

Y - y coordinate

radius - Radius

fill_value - undefine value

返回:

grid data

interpolation_Nearest_bak

public static Array interpolation_Nearest_bak(java.util.List<java.lang.Number> x_s,
                                              java.util.List<java.lang.Number> y_s,
                                              Array a,
                                              java.util.List<java.lang.Number> X,
                                              java.util.List<java.lang.Number> Y,
                                              double radius)

Interpolate with nearest method

参数:

x_s - scatter X array

y_s - scatter Y array

a - scatter value array

X - x coordinate

Y - y coordinate

radius - Radius

返回:

grid data

extendHalfCell

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

Extend the grid to half cell, so the grid points are the centers of the cells

参数:

x - Input x coordinate

y - Input y coordinate

返回:

Result x and y coordinates

interpolation_Inside

public static Array interpolation_Inside(java.util.List<java.lang.Number> x_s,
                                         java.util.List<java.lang.Number> y_s,
                                         Array a,
                                         java.util.List<java.lang.Number> X,
                                         java.util.List<java.lang.Number> Y)

Interpolate with inside method - The grid cell value is the average value of the inside points or fill value if no inside point.

参数:

x_s - scatter X array

y_s - scatter Y array

a - scatter value array

X - x coordinate

Y - y coordinate

返回:

grid data

interpolation_Inside_Mean

public static Array interpolation_Inside_Mean(Array x_s,
                                              Array y_s,
                                              Array a,
                                              Array X,
                                              Array Y,
                                              boolean center)

Interpolate with inside method - The grid cell value is the average value of the inside points or fill value if no inside point.

参数:

x_s - scatter X array

y_s - scatter Y array

a - scatter value array

X - x coordinate

Y - y coordinate

center - If the grid point is center or border

返回:

grid data

interpolation_Inside_Max

public static Array interpolation_Inside_Max(java.util.List<java.lang.Number> x_s,
                                             java.util.List<java.lang.Number> y_s,
                                             Array a,
                                             java.util.List<java.lang.Number> X,
                                             java.util.List<java.lang.Number> Y)

Interpolate with inside method - The grid cell value is the maximum value of the inside points or fill value if no inside point.

参数:

x_s - scatter X array

y_s - scatter Y array

a - scatter value array

X - x coordinate

Y - y coordinate

返回:

grid data

interpolation_Inside_Min

public static Array interpolation_Inside_Min(java.util.List<java.lang.Number> x_s,
                                             java.util.List<java.lang.Number> y_s,
                                             Array a,
                                             java.util.List<java.lang.Number> X,
                                             java.util.List<java.lang.Number> Y)

Interpolate with inside method - The grid cell value is the minimum value of the inside points or fill value if no inside point.

参数:

x_s - scatter X array

y_s - scatter Y array

a - scatter value array

X - x coordinate

Y - y coordinate

返回:

grid data

interpolation_Inside_Count

public static java.lang.Object interpolation_Inside_Count(java.util.List<java.lang.Number> x_s,
                                                          java.util.List<java.lang.Number> y_s,
                                                          java.util.List<java.lang.Number> X,
                                                          java.util.List<java.lang.Number> Y,
                                                          boolean pointDensity,
                                                          boolean centerPoint)

Interpolate with inside method - The grid cell value is the count number of the inside points or fill value if no inside point.

参数:

x_s - scatter X array

y_s - scatter Y array

X - x coordinate

Y - y coordinate

pointDensity - If return point density value

centerPoint - points locate at center or border of grid

返回:

grid data

cressman

public static Array cressman(java.util.List<java.lang.Number> x_s,
                             java.util.List<java.lang.Number> y_s,
                             Array v_s,
                             java.util.List<java.lang.Number> X,
                             java.util.List<java.lang.Number> Y,
                             java.util.List<java.lang.Number> radList)

Cressman analysis

参数:

x_s - scatter X array

y_s - scatter Y array

v_s - scatter value array

X - x array

Y - y array

radList - radii list

返回:

result grid data

cressman_bak

public static Array cressman_bak(java.util.List<java.lang.Number> x_s,
                                 java.util.List<java.lang.Number> y_s,
                                 Array v_s,
                                 java.util.List<java.lang.Number> X,
                                 java.util.List<java.lang.Number> Y,
                                 java.util.List<java.lang.Number> radList)

Cressman analysis

参数:

x_s - scatter X array

y_s - scatter Y array

v_s - scatter value array

X - x array

Y - y array

radList - radii list

返回:

result grid data

linint2

public static Array linint2(Array a,
                            Array X,
                            Array Y,
                            Array newX,
                            Array newY)

Interpolates from a rectilinear grid to another rectilinear grid using bilinear interpolation.

参数:

a - The sample array

X - X coordinate of the sample array

Y - Y coordinate of the sample array

newX - X coordinate of the query points

newY - Y coordinate of the query points

返回:

Resampled array

slice

public static Array slice(Array a,
                          int axis,
                          int idx)
                   throws InvalidRangeException

Get slice array along an axis

参数:

a - The original array

axis - The axis

idx - The axis index

返回:

Slice array

抛出:

InvalidRangeException

slice

public static Array slice(Array a,
                          int axis,
                          Array dim,
                          double v)
                   throws InvalidRangeException

Get slice array along an axis

参数:

a - The original array

axis - The axis

dim - axis dimension array

v - axis value of slice

返回:

Slice array

抛出:

InvalidRangeException

resample_Bilinear

public static Array resample_Bilinear(Array a,
                                      java.util.List<java.lang.Number> X,
                                      java.util.List<java.lang.Number> Y,
                                      java.util.List<java.lang.Number> newX,
                                      java.util.List<java.lang.Number> newY)

Resample grid array with bilinear method

参数:

a - The sample array

X - X coordinate of the sample array

Y - Y coordinate of the sample array

newX - X coordinate of the query points

newY - Y coordinate of the query points

返回:

Resampled array

resample_Bilinear

public static Array resample_Bilinear(Array a,
                                      Array X,
                                      Array Y,
                                      Array newX,
                                      Array newY)

Resample grid array with bilinear method

参数:

a - The sample array

X - X coordinate of the sample array

Y - Y coordinate of the sample array

newX - X coordinate of the query points

newY - Y coordinate of the query points

返回:

Resampled array

resample_Neighbor

public static Array resample_Neighbor(Array a,
                                      Array X,
                                      Array Y,
                                      Array newX,
                                      Array newY)

Resample grid array with neighbor method

参数:

a - The sample array

X - X coordinate of the sample array

Y - Y coordinate of the sample array

newX - X coordinate of the query points

newY - Y coordinate of the query points

返回:

Resampled array

interpolate

public Array interpolate(Array a,
                         java.util.List<java.lang.Number> X,
                         java.util.List<java.lang.Number> Y)

Interpolate array data

参数:

a - Array

X - X coordinates

Y - Y coordinates

返回:

Result array data

interpn_s

public static double interpn_s(java.util.List<java.util.List<java.lang.Number>> points,
                               Array values,
                               java.util.List<java.lang.Number> xi)

Multidimensional interpolation on regular grids.

参数:

points - The points defining the regular grid in n dimensions.

values - The data on the regular grid in n dimensions.

xi - The coordinates to sample the gridded data at

返回:

Interpolation value

interpn_s

public static double interpn_s(java.util.List<Array> points,
                               Array values,
                               Array xi)

Multidimensional interpolation on regular grids.

参数:

points - The points defining the regular grid in n dimensions.

values - The data on the regular grid in n dimensions.

xi - The coordinates to sample the gridded data at

返回:

Interpolation value

interpn

public static Array interpn(java.util.List<Array> points,
                            Array values,
                            java.util.List<Array> xi)

Multidimensional interpolation on regular grids.

参数:

points - The points defining the regular grid in n dimensions.

values - The data on the regular grid in n dimensions.

xi - The coordinates to sample the gridded data at - 2D

返回:

Interpolation value

interpn

public static java.lang.Object interpn(java.util.List<Array> points,
                                       Array values,
                                       Array xi)
                                throws InvalidRangeException

Multidimensional interpolation on regular grids.

参数:

points - The points defining the regular grid in n dimensions.

values - The data on the regular grid in n dimensions.

xi - The coordinates to sample the gridded data at - 2D

返回:

Interpolation value

抛出:

ucar.ma2.InvalidRangeException

InvalidRangeException

findIndices

public static java.lang.Object[] findIndices(java.util.List<java.util.List<java.lang.Number>> points,
                                             java.util.List<java.lang.Number> xi)

Find indices

参数:

points - The points defining the regular grid in n dimensions.

xi - The coordinates to sample the gridded data at

返回:

Indices

findIndices

public static java.lang.Object[] findIndices(java.util.List<Array> points,
                                             Array xi)

Find indices

参数:

points - The points defining the regular grid in n dimensions.

xi - The coordinates to sample the gridded data at

返回:

Indices

searchSorted

public static int searchSorted(java.util.List<java.lang.Number> a,
                               double v)

Search sorted list index

参数:

a - Sorted list

v - value

返回:

Index

searchSorted

public static int searchSorted(Array a,
                               double v)

Search sorted list index

参数:

a - Sorted list

v - value

返回:

Index

interpolate_1d

public static Array interpolate_1d(double x,
                                   Array xp,
                                   Array a,
                                   int axis)
                            throws InvalidRangeException

Interpolates data with any shape over a specified axis.

参数:

x - Desired interpolated value

xp - The x-coordinates of the data points.

a - The data to be interpolated.

axis - The axis to interpolate over.

返回:

Interpolated data

抛出:

InvalidRangeException

interpolate_1d

public static Array interpolate_1d(Array xa,
                                   Array xp,
                                   Array a,
                                   int axis)
                            throws InvalidRangeException

Interpolates data with any shape over a specified axis.

参数:

xa - Desired interpolated values

xp - The x-coordinates of the data points.

a - The data to be interpolated.

axis - The axis to interpolate over.

返回:

Interpolated data

抛出:

InvalidRangeException

toStation

public static double toStation(Array data,
                               java.util.List<java.lang.Number> xArray,
                               java.util.List<java.lang.Number> yArray,
                               double x,
                               double y,
                               double missingValue)

Interpolate data to a station point

参数:

data - Data array

xArray - X array

yArray - Y array

x - X coordinate of the station

y - Y coordinate of the station

missingValue - Missing value

返回:

Interpolated value

toStation

public static double toStation(Array data,
                               java.util.List<java.lang.Number> xArray,
                               java.util.List<java.lang.Number> yArray,
                               double x,
                               double y)

Interpolate data to a station point

参数:

data - Data array

xArray - X array

yArray - Y array

x - X coordinate of the station

y - Y coordinate of the station

返回:

Interpolated value

getDimIndex

public static int getDimIndex(Array dim,
                              java.lang.Number v)

Get value index in a dimension array

参数:

dim - Dimension array

v - The value

返回:

value index

gridIndex

public static int[] gridIndex(Array xdim,
                              Array ydim,
                              double x,
                              double y)

Get grid array x/y value index

参数:

xdim - X coordinate array

ydim - Y coordinate array

x - X value

y - Y value

返回:

X/Y index

gridIndex

public static int[] gridIndex(double[][] xdim,
                              double[][] ydim,
                              double x,
                              double y)

Get grid array x/y value index

参数:

xdim - X coordinate array

ydim - Y coordinate array

x - X value

y - Y value

返回:

X/Y index

toStation

public static double toStation(Array data,
                               Array xArray,
                               Array yArray,
                               double x,
                               double y)

Interpolate data to a station point

参数:

data - Data array

xArray - X array

yArray - Y array

x - X coordinate of the station

y - Y coordinate of the station

返回:

Interpolated value

toStation_Neighbor

public static double toStation_Neighbor(Array data,
                                        java.util.List<java.lang.Number> xArray,
                                        java.util.List<java.lang.Number> yArray,
                                        double x,
                                        double y,
                                        double missingValue)

Interpolate data to a station point

参数:

data - Data array

xArray - X array

yArray - Y array

x - X coordinate of the station

y - Y coordinate of the station

missingValue - Missing value

返回:

Interpolated value

toStation_Neighbor

public static double toStation_Neighbor(Array data,
                                        java.util.List<java.lang.Number> xArray,
                                        java.util.List<java.lang.Number> yArray,
                                        double x,
                                        double y)

Interpolate data to a station point

参数:

data - Data array

xArray - X array

yArray - Y array

x - X coordinate of the station

y - Y coordinate of the station

返回:

Interpolated value

toStation_Neighbor

public static double toStation_Neighbor(Array data,
                                        Array xArray,
                                        Array yArray,
                                        double x,
                                        double y)

Interpolate data to a station point

参数:

data - Data array

xArray - X array

yArray - Y array

x - X coordinate of the station

y - Y coordinate of the station

返回:

Interpolated value