visad.jmet

Class NetcdfGrids

java.lang.Object

visad.jmet.NetcdfGrids

public class NetcdfGrids
extends Object

Reads data from netCDF NCEP model grids one parameter at a time instead of the whole file (see Plain). This is pretty focused on delivering grids that are renderable in 3D.

Author:

Tom Whittaker

Constructor Summary

Constructors

Constructor and Description
NetcdfGrids(File filename)
NetcdfGrids(String filename) set up to read grids from a netCDF file

Method Summary

Modifier and Type	Method and Description
Vector	get3dVariables() fetch a list of 3D Variable names, long_names, and units for those parameters that have dimensions (x,y,level,record)
Vector	get4dVariables() fetch a list of 4D Variable names, long_names, and units for those parameters that have dimensions (x,y,level,record)
double	getAspect()
Dimension	getDimension()
Integer2DSet	getDomainSet()
Tuple[]	getGrids(String name, RealType values, double[][] range) fetch the grids for one parameter
Tuple[][]	getGridsWithTime(String name, RealType values, double[][] range) fetches grids are returns a Tuple [level][record] of FlatFields this was implemented to test the offset between mapping to animator or just doing one at a time...
int	getNumberOfLevels()
int	getNumberOfTimes()
double[]	getPressureLevels()
String[][]	getVariableNames() fetch a list of Variable names, long_names, and units
static void	main(String[] args) Test routine: java NetcdfGrids
void	setRealTypes(RealType x, RealType y, RealType level, RealType time_type, RealType pres) set the RealTypes to use for coordinates (x,y,z,t) and pressure values

Methods inherited from class java.lang.Object

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

Constructor Detail

NetcdfGrids

public NetcdfGrids(String filename)

set up to read grids from a netCDF file

Parameters:

filename - is the name of the netCDF file to read from

NetcdfGrids

public NetcdfGrids(File filename)

Method Detail

setRealTypes

public void setRealTypes(RealType x,
                         RealType y,
                         RealType level,
                         RealType time_type,
                         RealType pres)

set the RealTypes to use for coordinates (x,y,z,t) and pressure values

Parameters:

x - X-coordinate

y - Y-coordinate

level - level dimension

time_type - forecast valid time

pres - MathType of vertical coordinate in display

get4dVariables

public Vector get4dVariables()

fetch a list of 4D Variable names, long_names, and units for those parameters that have dimensions (x,y,level,record)

Returns:

names[0][k] is name; [1][k] is long_name, [2][k] is unit

get3dVariables

public Vector get3dVariables()

fetch a list of 3D Variable names, long_names, and units for those parameters that have dimensions (x,y,level,record)

Returns:

names[0][k] is name; [1][k] is long_name, [2][k] is unit

getVariableNames

public String[][] getVariableNames()

fetch a list of Variable names, long_names, and units

Returns:

names[0][k] is name; [1][k] is long_name, [2][k] is unit

getAspect

public double getAspect()

getNumberOfLevels

public int getNumberOfLevels()

getPressureLevels

public double[] getPressureLevels()

getNumberOfTimes

public int getNumberOfTimes()

getDimension

public Dimension getDimension()

getDomainSet

public Integer2DSet getDomainSet()

getGrids

public Tuple[] getGrids(String name,
                        RealType values,
                        double[][] range)

fetch the grids for one parameter

Parameters:

name - the name of the parameter

values - the RealType associated with name

Returns:

Tuple[2] where Tuple[0] is the vertical coordinate value and Tuple[1] is the FlatField(s) of data

main

public static void main(String[] args)

Test routine: java NetcdfGrids

getGridsWithTime

public Tuple[][] getGridsWithTime(String name,
                                  RealType values,
                                  double[][] range)

fetches grids are returns a Tuple [level][record] of FlatFields this was implemented to test the offset between mapping to animator or just doing one at a time...