Re: [Matplotlib-users] Line changes color along its length

[Jonathan S. <js...@cf...>]

This is of interest to me, and it's nice to know that this is do-able
with matplotlib, but like many of the examples, I find it sorely lacking
in documentation.  For example, why are the points and segments arrays
shaped so specifically the way they are?  Why the call to set_array?
Could the same thing be accomplished with a call to set_facecolor?  I
hope the same things can be accomplished in a more straightforward way.
Any illumination on these points would be appreciated.

Jon

>         On Tue, Sep 7, 2010 at 6:50 PM, Brian Larsen
>         <bal...@la...> wrote:
>         > Hey all,
>         > I think I know the answer here as "no" or something,  but
>         say I have a curve
>         > I want to plot and I want the color to change along the
>         curve to denote the
>         > 3rd variable is there anyway to do this is matplotlib?
>         > What I mean is take the simple plot
>         > from pylab import *
>         > plot(range(30), range(30, 60), lw=10)
>         > and say that the 3rd variable is
>         > inten = [val ** 2 for val in range(30)]
>         > then can the line change color along its length according to
>         a specified
>         > color table?
>         > In IDL this is done by just giving a color array with the
>         same length as the
>         > data then the line changes with the current colortable.
>         
>         Try this:
>         
>         http://matplotlib.sourceforge.net/examples/pylab_examples/multicolored_line.html
>         
>         Ryan
>         
>         -- 
>         Ryan May
>         Graduate Research Assistant
>         School of Meteorology
>         University of Oklahoma