assign - Maple Help
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DoubleRTable.assign

assign a double into an element of the DoubleRTable

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

Parameters

 index - index of the entry to assign val - value to assign into the list

Description

 • The assign function assigns the Java double val into the element of the DoubleRTable indexed by index.
 • 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 $i-1$.
 • As RTables do not have unique representations, elements of an RTable can be assigned to at any time.

Examples

 import com.maplesoft.openmaple.*; import com.maplesoft.externalcall.MapleException; class Example { public static void main( String notused[] ) throws MapleException { String[] mapleArgs = { "java" }; Engine engine = new Engine( mapleArgs, new EngineCallBacksDefault(), null, null ); DoubleRTable rt = (DoubleRTable)engine.evaluate( "Array( 1..2, 1..2, evalf( [[1/3, 1/4],[1/5,1/6]] ), datatype=float[8] ):" ); int[] index = new int[2]; index[0] = 1; index[1] = 1; rt.assign( index, 2./3 ); index[0] = 1; index[1] = 2; rt.assign( index, 2./4 ); index[0] = 2; index[1] = 1; rt.assign( index, 2./5 ); index[0] = 2; index[1] = 2; rt.assign( index, 2./6 ); System.out.println( rt ); } }

Executing this code produces the following output.

 Array(1..2, 1..2, [[.666666666666666630,.500000000000000000],[.400000000000000022,.333333333333333315]], datatype = float[8], storage = rectangular, order = Fortran_order)