Shang is not equipped with built-in functionalities for plotting. A set of programs written in Shang language can create graphics in postscript format. To use it, the program "plot.x" needs to be run first. Here is a simple example
with("plot.x"); x = linspace(-pi, pi); y = exp(-0.3 * x.^2) .* cos(5 * x); z = exp(-0.3 * x.^2) .* sin(5 * x); fig = figure.new(); fig.plot(x, y); fig.plot(x, z); fig.save("example.eps");You need a postscript viewer to view, print, or conver the .eps files.