Thanks Jervis, I was able to get it to work!
Geoff On 29 April 2010 09:09, Jervis Whitley <jervi...@gmail.com> wrote: > > > On Thu, Apr 29, 2010 at 9:00 AM, Geoff Sims <geoffrey.s...@gmail.com>wrote: > >> Hi there, >> >> I've been spending hours trying to get the colormaps to work, and I am >> still having no luck. All the examples I have found seem to use imshow() >> rather than the figure() and plot(). This is a very simple thing I am >> trying to do, a 2D x-y plot, with z values represented by a color. >> >> Basically, I have 3 numpy ndarrays: >> >> x - x values >> y - y values >> z - color values >> >> Obviously, it is trivial to plot the x and y values: >> >> *plt.plot(x, y, "bo")* >> >> But how to I use the z array to use the inbuilt colormap features? >> >> I've tried things like: >> >> *plt.plot(x, y, color=matplotlib.cm.jet(z), marker='o', markersize=6)* >> >> But it doesn't seem to work - how do I get this working? >> >> many thanks >> Geoff Sims >> >> >> >> >> ------------------------------------------------------------------------------ >> >> _______________________________________________ >> Matplotlib-users mailing list >> Matplotlib-users@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/matplotlib-users >> >> > I used something similar to the following recently that gave the scatter > points a different colour depending on the z-axis values. > > chart = pylab.scatter(x, y, c=z, edgecolors='none') > colourbar = pylab.colorbar() > > I'm sorry I can't give you better information about the colormap features > though. > > Cheers, > > Jervis > >
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