The function "Dat2PBM.sci" creates a .PBM bitmap file with a LIST of drawings as
Drawings are a list of structures of X and Y vectors (points to plot).
This function provides high resolution and a better result than Scilab "xs2bmp"
Values of X and Y must be between -500 and +500 (1 Mégapixel bitmap) in this
Demo_PBM_1 creates a .PBM file with Figure.dat.
Demo_PBM_2 creates a .PBM file with X and Y vectors in the same way than
Other files are subfunctions.
Unfortunately writing the file in Scilab 5.3.1 takes a very long time with
"mputl" function (see Bug #9264).