org.ala.layers.intersect
Class Grid

java.lang.Object
  org.ala.layers.intersect.Grid

public class Grid
extends java.lang.Object

Grid.java Created on June 24, 2005, 4:12 PM

Author:

Robert Hijmans, rhijmans@berkeley.edu Updated 15/2/2010, Adam Interface for .gri/.grd files for now

Field Summary

java.lang.Boolean	byteorderLSB
java.lang.String	datatype
java.lang.String	filename
protected org.apache.log4j.Logger	logger Log4j instance
double	maxval
double	minval
int	ncols
double	nodatavalue
int	nrows
java.lang.String	units
java.lang.Boolean	valid
double[]	values
double	xmax
double	xmin
double	xres
double	ymax
double	ymin
double	yres

Constructor Summary

Grid(java.lang.String fname)
loads grd for gri file reference

Method Summary

float[]	calculatetMinMax()
int	getcellnumber(double x, double y)
float[]	getGrid()
static Grid	getGrid(java.lang.String filename)
static Grid	getGridStandardized(java.lang.String filename)
static Grid	getLoadedGrid(java.lang.String filename)
float[]	getValues(double[][] points)
float[]	getValues2(double[][] points) do get values of grid for provided points.
float[]	getValues3(double[][] points, int bufferSize)
void	mergeMissingValues(Grid sourceOfMissingValues, boolean hideMissing)
void	printMinMax()
void	writeGrid(java.lang.String newfilename, double[] dfiltered, double xmin, double ymin, double xmax, double ymax, double xres, double yres, int nrows, int ncols) for grid cutter writes out a list of double (same as getGrid() returns) to a file byteorderlsb data type, FLOAT
void	writeGrid(java.lang.String newfilename, float[] dfiltered, double xmin, double ymin, double xmax, double ymax, double xres, double yres, int nrows, int ncols)
void	writeGrid(java.lang.String newfilename, int[] dfiltered, double xmin, double ymin, double xmax, double ymax, double xres, double yres, int nrows, int ncols) for DomainGenerator writes out a list of double (same as getGrid() returns) to a file byteorderlsb data type, FLOAT
void	writeHeader(java.lang.String newfilename, double xmin, double ymin, double xmax, double ymax, double xres, double yres, int nrows, int ncols, double minvalue, double maxvalue)
void	writeHeader(java.lang.String newfilename, double xmin, double ymin, double xmax, double ymax, double xres, double yres, int nrows, int ncols, double minvalue, double maxvalue, java.lang.String datatype, java.lang.String nodata)

Methods inherited from class java.lang.Object

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

Field Detail

logger

protected org.apache.log4j.Logger logger

Log4j instance

byteorderLSB

public java.lang.Boolean byteorderLSB

ncols

public int ncols

nrows

public int nrows

nodatavalue

public double nodatavalue

valid

public java.lang.Boolean valid

values

public double[] values

xmin

public double xmin

xmax

public double xmax

ymin

public double ymin

ymax

public double ymax

xres

public double xres

yres

public double yres

datatype

public java.lang.String datatype

minval

public double minval

maxval

public double maxval

filename

public java.lang.String filename

units

public java.lang.String units

Constructor Detail

Grid

public Grid(java.lang.String fname)

loads grd for gri file reference

Parameters:

fname - full path and file name without file extension of .gri and .grd files to open

Method Detail

getGrid

public static Grid getGrid(java.lang.String filename)

getLoadedGrid

public static Grid getLoadedGrid(java.lang.String filename)

getGridStandardized

public static Grid getGridStandardized(java.lang.String filename)

getcellnumber

public int getcellnumber(double x,
                         double y)

getGrid

public float[] getGrid()

writeGrid

public void writeGrid(java.lang.String newfilename,
                      int[] dfiltered,
                      double xmin,
                      double ymin,
                      double xmax,
                      double ymax,
                      double xres,
                      double yres,
                      int nrows,
                      int ncols)

for DomainGenerator writes out a list of double (same as getGrid() returns) to a file byteorderlsb data type, FLOAT

Parameters:

newfilename -

dfiltered -

writeGrid

public void writeGrid(java.lang.String newfilename,
                      double[] dfiltered,
                      double xmin,
                      double ymin,
                      double xmax,
                      double ymax,
                      double xres,
                      double yres,
                      int nrows,
                      int ncols)

for grid cutter writes out a list of double (same as getGrid() returns) to a file byteorderlsb data type, FLOAT

Parameters:

newfilename -

dfiltered -

writeGrid

public void writeGrid(java.lang.String newfilename,
                      float[] dfiltered,
                      double xmin,
                      double ymin,
                      double xmax,
                      double ymax,
                      double xres,
                      double yres,
                      int nrows,
                      int ncols)

writeHeader

public void writeHeader(java.lang.String newfilename,
                        double xmin,
                        double ymin,
                        double xmax,
                        double ymax,
                        double xres,
                        double yres,
                        int nrows,
                        int ncols,
                        double minvalue,
                        double maxvalue)

writeHeader

public void writeHeader(java.lang.String newfilename,
                        double xmin,
                        double ymin,
                        double xmax,
                        double ymax,
                        double xres,
                        double yres,
                        int nrows,
                        int ncols,
                        double minvalue,
                        double maxvalue,
                        java.lang.String datatype,
                        java.lang.String nodata)

getValues2

public float[] getValues2(double[][] points)

do get values of grid for provided points. loads whole grid file as double[] in process

Parameters:

points -

Returns:

printMinMax

public void printMinMax()

getValues

public float[] getValues(double[][] points)

Parameters:

points - input array for longitude and latitude double[number_of_points][2]

Returns:

array of .gri file values corresponding to the points provided

getValues3

public float[] getValues3(double[][] points,
                          int bufferSize)

Parameters:

points - input array for longitude and latitude double[number_of_points][2] and sorted latitude then longitude

Returns:

array of .gri file values corresponding to the points provided

mergeMissingValues

public void mergeMissingValues(Grid sourceOfMissingValues,
                               boolean hideMissing)

calculatetMinMax

public float[] calculatetMinMax()

Parameters:

points - input array for longitude and latitude double[number_of_points][2]

Returns:

calculated min and max values of a grid file as float [] where [0] is min and [1] is max.