Colored line or scatter plot

Plot lines with CData, (actually surface)

plots a 2-D "line" with c-data as color
Makes a surface object and the colouring is controlled by the colormap.

Examples:
x = 0:0.1:2*pi;
color_line(x,sin(x),sin(x))
color_line(x,cos(x),cos(x),'*')