ucar.unidata.geoloc.vertical

Class HybridSigmaPressure

java.lang.Object

ucar.unidata.geoloc.vertical.VerticalTransformImpl

ucar.unidata.geoloc.vertical.HybridSigmaPressure

All Implemented Interfaces:

VerticalTransform

public class HybridSigmaPressure
extends VerticalTransformImpl

Create a 3D height(z,y,x) array using the netCDF CF convention formula for "Hybrid Sigma Pressure".

pressure(x,y,z) = a(z)*p0 + b(z)*surfacePressure(x,y) or

pressure(x,y,z) = ap(z) + b(z)*surfacePressure(x,y)

See Also:

http://cf-pcmdi.llnl.gov/

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	A The "a" variable name identifier
static java.lang.String	AP The "a" variable name identifier
static java.lang.String	B The "b" variable name identifier
static java.lang.String	P0 P-naught identifier
static java.lang.String	PS Surface pressure name identifier

Fields inherited from class ucar.unidata.geoloc.vertical.VerticalTransformImpl

units

Constructor Summary

Constructors

Constructor and Description
HybridSigmaPressure(NetcdfFile ds, Dimension timeDim, java.util.List<Parameter> params) Construct a coordinate transform for sigma pressure

Method Summary

Modifier and Type	Method and Description
ArrayDouble.D3	getCoordinateArray(int timeIndex) Get the 3D vertical coordinate array for this time step.
ArrayDouble.D1	getCoordinateArray1D(int timeIndex, int xIndex, int yIndex) Get the 1D vertical coordinate array for this time step and point

Methods inherited from class ucar.unidata.geoloc.vertical.VerticalTransformImpl

getParameterBooleanValue, getParameterStringValue, getTimeDimension, getUnitString, isTimeDependent, readArray, subset

Methods inherited from class java.lang.Object

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

Field Detail

P0

public static final java.lang.String P0

P-naught identifier

See Also:

Constant Field Values

PS

public static final java.lang.String PS

Surface pressure name identifier

See Also:

Constant Field Values

A

public static final java.lang.String A

The "a" variable name identifier

See Also:

Constant Field Values

AP

public static final java.lang.String AP

The "a" variable name identifier

See Also:

Constant Field Values

B

public static final java.lang.String B

The "b" variable name identifier

See Also:

Constant Field Values

Constructor Detail

HybridSigmaPressure

public HybridSigmaPressure(NetcdfFile ds,
                           Dimension timeDim,
                           java.util.List<Parameter> params)

Construct a coordinate transform for sigma pressure

Parameters:

ds - netCDF dataset

timeDim - time dimension

params - list of transformation Parameters

Method Detail

getCoordinateArray

public ArrayDouble.D3 getCoordinateArray(int timeIndex)
                                  throws java.io.IOException,
                                         InvalidRangeException

Get the 3D vertical coordinate array for this time step.

Specified by:

getCoordinateArray in interface VerticalTransform

Specified by:

getCoordinateArray in class VerticalTransformImpl

Parameters:

timeIndex - the time index. Ignored if !isTimeDependent().

Returns:

vertical coordinate array

Throws:

java.io.IOException - problem reading data

InvalidRangeException - _more_

getCoordinateArray1D

public ArrayDouble.D1 getCoordinateArray1D(int timeIndex,
                                           int xIndex,
                                           int yIndex)
                                    throws java.io.IOException,
                                           InvalidRangeException

Get the 1D vertical coordinate array for this time step and point

Specified by:

getCoordinateArray1D in interface VerticalTransform

Specified by:

getCoordinateArray1D in class VerticalTransformImpl

Parameters:

timeIndex - the time index. Ignored if !isTimeDependent().

xIndex - the x index

yIndex - the y index

Returns:

vertical coordinate array

Throws:

java.io.IOException - problem reading data

InvalidRangeException - _more_