Examples of cern.colt.matrix.DoubleMatrix2D.assign()

cern.colt.matrix.DoubleMatrix2D.assign()
Sets all cells to the state specified by values. values is required to have the form values[row][column] and have exactly the same number of rows and columns as the receiver.
The values are copied. So subsequent changes in values are not reflected in the matrix, and vice-versa. @param values the values to be filled into the cells. @return this (for convenience only). @throws IllegalArgumentException if values.length != rows() || for any 0 <= row < rows(): values[row].length != columns().

//DoubleMatrix2D A = Factory2D.make(values);
DoubleMatrix2D A = Factory2D.ascending(3,4);
DoubleMatrix2D B = Factory2D.ascending(2,3);
DoubleMatrix2D C = Factory2D.ascending(1,2);
B.assign(F.plus(A.zSum()));
C.assign(F.plus(B.zSum()));




/*
System.out.println("\n"+A);
System.out.println("\n"+B);

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public static void doubleTest3() {
int rows = 4;
int columns = 5; // make a 4*5 matrix
DoubleMatrix2D master = new DenseDoubleMatrix2D(rows,columns);
System.out.println(master);
master.assign(1); // set all cells to 1
System.out.println("\n"+master);
master.viewPart(2,0,2,3).assign(2); // set [2,1] .. [3,3] to 2
System.out.println("\n"+master);


DoubleMatrix2D flip1 = master.viewColumnFlip();

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public static void doubleTest4() {
int rows = 4;
int columns = 5; // make a 4*5 matrix
DoubleMatrix2D master = new DenseDoubleMatrix2D(rows,columns);
System.out.println(master);
master.assign(1); // set all cells to 1
DoubleMatrix2D view = master.viewPart(2,0,2,3).assign(2);
System.out.println("\n"+master);
System.out.println("\n"+view);
Transform.mult(view,3);
System.out.println("\n"+master);

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DoubleMatrix2D view1 = master.viewSelection(rowIndexes,columnIndexes);
System.out.println("view1="+view1);
DoubleMatrix2D view2 = view1.viewPart(0,0,2,2);
System.out.println("view2="+view2);


view2.assign(-1);
System.out.println("master replaced"+master);
System.out.println("flip1 replaced"+view1);
System.out.println("flip2 replaced"+view2);


}

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DoubleMatrix2D view1 = master.viewDice();
System.out.println("view1="+view1);
DoubleMatrix2D view2 = view1.viewDice();
System.out.println("view2="+view2);


view2.assign(-1);
System.out.println("master replaced"+master);
System.out.println("flip1 replaced"+view1);
System.out.println("flip2 replaced"+view2);


}

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DoubleMatrix2D view1 = master.viewRowFlip();
System.out.println("view1="+view1);
DoubleMatrix2D view2 = view1.viewRowFlip();
System.out.println("view2="+view2);


view2.assign(-1);
System.out.println("master replaced"+master);
System.out.println("flip1 replaced"+view1);
System.out.println("flip2 replaced"+view2);


}

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DoubleMatrix2D H = new DenseDoubleMatrix2D( vals ); // see values below...
System.out.println("\nHplus="+H.viewDice().zMult(H,null));


DoubleMatrix2D Hplus = Algebra.DEFAULT.inverse(H.viewDice().zMult( H,null )).zMult(H.viewDice(),null);
Hplus.assign(cern.jet.math.Functions.round(1.0E-10));
System.out.println("\nHplus="+Hplus);


    /*
DoubleMatrix2D HtH = new DenseDoubleMatrix2D( 5, 5 );
DoubleMatrix2D Hplus = new DenseDoubleMatrix2D( 5, 6 );

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    A = inverse(A);
    p = -p;
  }
  if (p==0) return DoubleFactory2D.dense.identity(A.rows());
  DoubleMatrix2D T = A.like(); // temporary
  if (p==1) return T.assign(A);  // safes one auxiliary matrix allocation
  if (p==2) {
    blas.dgemm(false,false,1,A,A,0,T); // mult(A,A); // safes one auxiliary matrix allocation
    return T;
  }

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  System.out.print("now initializing... ");
  cern.colt.Timer timer = new cern.colt.Timer().start();
    
  final cern.jet.math.Functions F = cern.jet.math.Functions.functions;
  DoubleMatrix2D A = cern.colt.matrix.DoubleFactory2D.dense.make(rows,columns);
  A.assign(new cern.jet.random.engine.DRand()); // initialize randomly
  timer.stop().display();


  // also benchmark copying in its several implementation flavours
  DoubleMatrix2D B = A.like();
  timer.reset().start();

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  // also benchmark copying in its several implementation flavours
  DoubleMatrix2D B = A.like();
  timer.reset().start();
  System.out.print("now copying... ");
  B.assign(A);
  timer.stop().display();


  timer.reset().start();
  System.out.print("now copying subrange... ");
  B.viewPart(0,0,rows,columns).assign(A.viewPart(0,0,rows,columns));

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