ucar.unidata.view.sounding

Class SelectorCell

java.lang.Object

ucar.unidata.view.sounding.ComputeCell

ucar.unidata.view.sounding.SelectorCell

public final class SelectorCell
extends ComputeCell

Creates an output Data object from an array of input Data objects.

Version:

$Revision: 1.7 $ $Date: 2005/05/13 18:33:37 $

Author:

Steven R. Emmerson

Constructor Summary

Constructors

Constructor and Description
SelectorCell(visad.DataReference indexRef, visad.DataReference[] refs, visad.Data noData) Constructs from a reference to a selector index, an array of references to the individual data objects, and a missing output data value.

Method Summary

Modifier and Type	Method and Description
protected visad.Data	compute(visad.Data[] datums) Computes (selects) the output Data.

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

SelectorCell

public SelectorCell(visad.DataReference indexRef,
                    visad.DataReference[] refs,
                    visad.Data noData)
             throws visad.VisADException,
                    java.rmi.RemoteException

Constructs from a reference to a selector index, an array of references to the individual data objects, and a missing output data value.

Parameters:

indexRef - The selector index reference.

refs - The input data references.

noData - The missing-data value.

Throws:

visad.VisADException - if a VisAD failure occurs.

java.rmi.RemoteException - if a Java RMI failure occurs.

java.lang.IllegalArgumentException - if refs.length == 0.

Method Detail

compute

protected visad.Data compute(visad.Data[] datums)
                      throws visad.VisADException,
                             java.rmi.RemoteException

Computes (selects) the output Data.

Specified by:

compute in class ComputeCell

Parameters:

datums - The data objects. datums[0] is the (origin zero) selector index and must be a Real. datums[1+i] is the data object corresponding to the ith DataReference of the array used during construction.

Returns:

The input datum corresponding to the selector index.

Throws:

java.lang.ArrayIndexOutOfBoundsException - if ((Real)datums[0]).getValue() is less than zero or greater than datums.length-2.

visad.VisADException - if a VisAD failure occurs.

java.rmi.RemoteException - if a Java RMI failure occurs.