Perform the coordinates of a regular grid.
[X,Y] = NL_F_GridXY(Xm,XM,Ym,YM,L,C)
minimal x-coordinate.
maximal x-coordinate.
minimal y-coordinate.
maximal y-coordinate.
number of lines.
number of columns.
x-coordinate vector.
y-coordinate vector.
NL_F_GridXY performs the coordinates [X,Y] of a regular grid composed by L lines and C columns linearly spaced in [Xm:XM] and [Ym:YM].