[Matplotlib-users] Newbie help with subplots

[Jeff L. <lay...@at...>]

Good morning,

I'm been using matplotlib for a while but it's always been very
simple plots (hey - I'm a simple person). I have a need for some
"fancier" plots using subplots.

I want to have 3 charts one above the other with a single set of
x-axis labels on the bottom subplot that works for all three charts.
I'd also like to put a legend outside the set of three charts - either
to the top right or horizontally along the bottom.

I've been reading a number of links and nothing really works.
Most everything is around pylab and I'm using just straight
matploblib. I hate to say it, but I need to have the solution and
I'm looking for some newbie help. One of the frustrating aspects
is I need to make sure it works for version 0.91 :(

I'm attaching a simple example script that shows the plots
as I currently have achieved them. Apologies for any bad coding.
Just in case the attachment doesn't make it through the code is
below.

Thanks!

Jeff




#!/usr/bin/python
#

import matplotlib.pyplot as plt;

if __name__ == '__main__':

    x=[0.0, 1.0, 2.0, 3.0, 4.0];
    y1 = [11.97, 1.01, 2.97, 1.0, 1.01];
    y2 = [3.55, 1.01, 3.96, 1.0, 0.0];
    y3 = [0.29, 0.0, 0.0, 0.0, 0.0];

    fig = plt.figure();
    ax1 = fig.add_subplot(311);
    ax2 = fig.add_subplot(312, sharex=ax1);
    ax3 = fig.add_subplot(313, sharex=ax1);

    ax1.plot(x, y1, "ro-");
    ax2.plot(x, y2, "bo-");
    ax3.plot(x, y3, "go-");

    ax1.grid();
    ax2.grid();
    ax3.grid();

    plt.show();

# end main