DoubleRTable.select - Maple Programming Help

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DoubleRTable.select

access a double stored in the DoubleRTable

 

Calling Sequence

Parameters

Description

Examples

Calling Sequence

double select( int index[] ) throws MapleException

Parameters

index

-

index of the entry to select

Description

• 

The select function returns the Java double indexed by index in the DoubleRTable

• 

The index parameter is an array of integers, one for each dimension of the DoubleRTable.  Each integer must be within the bounds determined by lowerBound and upperBound.  The index for dimension i is stored in the array at position i1.

Examples

import com.maplesoft.openmaple.*;

import com.maplesoft.externalcall.MapleException;

class Example

{

    public static void main( String notused[] ) throws MapleException

    {

    String mapleArgs[];

    Engine engine;

    DoubleRTable rt;

    double d;

    int index[];

    mapleArgs = new String[1];

    mapleArgs[0] = "java";

    engine = new Engine( mapleArgs, new EngineCallBacksDefault(),

        null, null );

    rt = (DoubleRTable)engine.evaluate( "Array( 1..2, 1..2, evalf( [[1/3, 1/4],[1/5,1/6]] ), datatype=float[8] ):" );

    index = new int[2];

    index[0] = 1;

    index[1] = 1;

    d = rt.select( index );

    System.out.println( d );

    index[0] = 1;

    index[1] = 2;

    d = rt.select( index );

    System.out.println( d );

    index[0] = 2;

    index[1] = 1;

    d = rt.select( index );

    System.out.println( d );

    index[0] = 2;

    index[1] = 2;

    d = rt.select( index );

    System.out.println( d );

    }

}

Executing this code produces the following output.

0.3333333333

0.25

0.2

0.1666666667

See Also

ExternalCalling/Java/MapleException

OpenMaple

OpenMaple/Java/API

OpenMaple/Java/DoubleRTable

OpenMaple/Java/DoubleRTable/assign

OpenMaple/Java/RTable

OpenMaple/Java/RTable/lowerBound

OpenMaple/Java/RTable/upperBound

 


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