Plot with symbols Input S is one of the following
's' square 'd' diamond 't' triangle 'i' inverted triangle 'l' left triangle 'r' right triangle 'c' circle
In the longer call s is vector that contains category marker that is plotted with symbol from text string S, i.e element i is plotted with symbol S(s(i)), c is vector for colormarking, and C is corresponding string of 'rgbcymwk' in permuted order. If C is omitted then c is taken as a colour in itself. The colors may then be changed by calling colormap. The input symsize defines the symbol size relative to the default size which is 1. It may be a scalar, which is then applied to all symbols, or a vector, one for each symbol.
Examples:
plotsym(x,y,z,'st','rb')
Points x,y are plotted with red squares (z=1) or blue triangles (z=2).
plotsym(x,y,'s',z,2)
Points x,y are plotted with squares of twice the standard size, filled with colors according to value in z and current colormap.