Method SubMatrix

Make B a submatrix of A with top left corner at (row, col). If no size argument is given then size of (A.Rows()-row, A.Cols()-col) is assumed. The variadic size argument can be either (nrows, ncols) or (nrows, ncols, nstep). The first form sets B size to (nrows, ncols). The second form is used to c

(B *FloatMatrix, row, col int, size ...int)