Fill

The method Fill sets all elements of a matrix to value (versions [1] and [3]). For a sparse matrix the method Fill sets only the non-zero elements to value. If value is zero the sparse matrix is completely emptied and any allocated memory is released.

Versions [2] and [4] allow filling a particular rectangular region of the matrix by specifying the lower and upper columns and rows of the area to be filled (parameters LowCol, HighCol, LowRow and HighRow).

Hint 1:

Setting both the low and high parameter of a dimension (i.e. LowCol and HighCol) to zero values forces the method to use all elements of that dimension.

Hint 2:

The class TMatrix has no explicit method to clear the elements of the matrix. In order to reset all elements to zero values, the method Fill should be used.

Example:

The statement Mat.Fill(0.0); clears all elements of the matrix Mat.

Example:

This method is used in the following example program (see http://www.lohninger.com/examples.html for downloading the code): covar, findcent, invmat