from
http://www.math.utexas.edu/pipermail/maxima/2012/028781.html
How to draw bounded region of Linear Programming Problems
such as x>=0, y>=0, 2x+y<=8 and -x+y<=2
Regards, Subiono
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(%i1) load(draw)$
(%i2) set_draw_defaults(
grid=true,
proportional_axes=xy)$
(%i3) wxdraw2d(
x_voxel = 30,
y_voxel = 30,
fill_color=skyblue,
region(x>=0 and y>=0 and 2*x+y<=8 and -x+y<=2,x,-1,5,y,-1,5));
(%t3) << Graphics >>
(%o3)
(%i4) build_info();
(%o4) build_info("5.27.0","2012-04-24 08:52:03","i686-pc-mingw32","GNU
Common Lisp (GCL)","GCL 2.6.8")
Aleksas D