- The plot program can function like a normal drawing tool -- the only
difference is that you have to type commands instead of using mouse. While it
may seem not as convenient as using a normal painter program, the
advantage of using commands is that it is very easy to modify and improve them.
With Shang plot, a graph is very portable, -- it is no more than a few commands saved in a
file. Besides, plot has all the numerical computing capabilities of
Shang at its
disposal.
- There's no need to plot everything before you save the figure. You can save the
figure every time you add something to the figure or make a change to it. After
saving, the postscript viewer will refresh the image, so that your command takes
effect right away.
- Put all the plotting commands in a file. Keep editing it and then running it until the
figure is satisfactory.
oz
2009-12-22