A list of the width and height of the graph to be plotted using
Creates and displays using
(system "gv tmp.eps") an
encapsulated PostScript graph of the function of one argument func
over the range x1 to x2. If the optional integer argument npts is
supplied, it specifies the number of points to evaluate func at.
Creates and displays an encapsulated PostScript graph of the one-argument functions func1, func2, ... over the range x1 to x2 at npts points.
coords is a list or vector of coordinates, lists of x and y coordinates. x-label and y-label are strings with which to label the x and y axes.