visad.jmet
Class NetcdfGrids

java.lang.Object
  extended by 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
NetcdfGrids(File filename)
           
NetcdfGrids(String filename)
          set up to read grids from a netCDF file
 
Method Summary
 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...