set scales for isometric plot (change the size of the window)
square(xmin, ymin, xmax, ymax)
four real values.
square is used to have isometric scales on the x
and y axes. The requested values xmin,
xmax, ymin,
ymax are the boundaries of the graphics frame
and square changes the graphics window
dimensions in order to have an isometric plot.
square sets the current graphics scales
and can be used in conjunction with graphics routines which request
the current graphics scale (for instance strf="x0z" in
plot2d).