ucar.unidata.view.sounding
Class BuoyancyProfileCell

java.lang.Object
  ucar.unidata.view.sounding.ComputeCell
      ucar.unidata.view.sounding.BuoyancyProfileCell

public final class BuoyancyProfileCell
extends ComputeCell

Computes a buoyancy profile from profiles of parcel and environmental densities. The buoyancy is defined as the massic volume (alias "specific volume" or "volume per mass") of the parcel minus the massic volume of the environment. Positive buoyancy corresponds to an upward force on the parcel.

This class is thread-compatible but not thread-safe: clients should synchronize concurrent access to instances of this class.

Version:

$Revision: 1.8 $ $Date: 2005/05/13 18:33:25 $

Author:

Steven R. Emmerson

Constructor Summary

BuoyancyProfileCell(DataReference envDenProRef, DataReference parDenProRef)
Constructs from input and output data references.

Method Summary

protected Data

compute(Data[] datums) Computes the output buoyancy-profile.

Methods inherited from class ucar.unidata.view.sounding.ComputeCell

clean, disableRef, enableAllInputRefs, getInputRefs, getOutputRef, noDataField, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

BuoyancyProfileCell

public BuoyancyProfileCell(DataReference envDenProRef,
                           DataReference parDenProRef)
                    throws VisADException,
                           RemoteException

Constructs from input and output data references.

Parameters:

envDenProRef - The input environmental density profile reference.

parDenProRef - The input parcel density profile reference.

Throws:

VisADException - if a VisAD failure occurs.

RemoteException - if a Java RMI failure occurs.

Method Detail

compute

protected Data compute(Data[] datums)
                throws TypeException,
                       VisADException,
                       RemoteException

Computes the output buoyancy-profile.

Specified by:

compute in class ComputeCell

Parameters:

datums - The input data. datums[0] is the environment's air density profile; datums[1] is the parcel's air density profile.

Returns:

The corresponding boyancy profile as the difference in massic volumes of the two input profiles.

Throws:

ClassCastException - if an input data reference has the wrong type of data object.

TypeException - if a VisAD data object has the wrong type.

VisADException - if a VisAD failure occurs.

RemoteException - if a Java RMI failure occurs.