assign a complex double into a ComplexDoubleRTable - Maple Help

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ComplexDoubleRTable.assign - assign a complex double into a ComplexDoubleRTable

Calling Sequence

void assign( int index[], double re, double im ) throws MapleException

void assign( int index[], double val[] ) throws MapleException




index of the entry to assign



real component of the complex double



imaginary component of the complex double



two-element array representing a complex double



The assign function assigns the complex double (constructed from re and im or val) into the element of the ComplexDoubleRTable indexed by index.


The first calling sequence constructs the complex number by assigning re as the real component and im as the imaginary component.  The second calling sequence constructs the complex number by assigning val[0] as the real component and val[1] as the imaginary component.


The index parameter is an array of integers, one for each dimension of the ComplexDoubleRTable.  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.


As RTables do not have unique representations, elements of an RTable can be assigned to any time.


import com.maplesoft.openmaple.*;

import com.maplesoft.externalcall.MapleException;

class Example


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


    String mapleArgs[];

    Engine engine;

    ComplexDoubleRTable a1;

    int index[];

    double e[];

    mapleArgs = new String[1];

    mapleArgs[0] = "java";

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

        null, null );

    a1 = (ComplexDoubleRTable)engine.evaluate( "Array( 1..2, 1..2, [[0.1,0.2],[0.3+.3*I,0.4+0.4*I]], datatype=complex[8]):" );

    index = new int[2];

    e = new double[2];

    index[0] = 1;

    index[1] = 1;

    e[0] = 0.1;

    e[1] = 0.1;

    a1.assign( index, e );

    index[0] = 2;

    index[1] = 1;

    a1.assign( index, 0.3, 0.0);

    index[0] = 1;

    index[1] = 2;

    e[0] = 0.2;

    e[1] = 0.2;

    a1.assign( index, e );

    index[0] = 2;

    index[1] = 2;

    a1.assign( index, 0.4, 0.0 );

    System.out.println( a1 );



Executing this code produces the following output.

Array(1..2, 1..2, [[.100000000000000004+.100000000000000004*I,.200000000000000010+.200000000000000010*I],[.299999999999999988+0.*I,.400000000000000022+0.*I]], datatype = complex[8], storage = rectangular, order = Fortran_order)

See Also

ExternalCalling/Java/MapleException, OpenMaple, OpenMaple/Java/API, OpenMaple/Java/ComplexDoubleRTable, OpenMaple/Java/ComplexDoubleRTable/select, OpenMaple/Java/RTable, OpenMaple/Java/RTable/lowerBound, OpenMaple/Java/RTable/upperBound

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