On Mon, Sep 26, 2011 at 12:24 PM, John Hunter jdh2...@gmail.com wrote:
On Mon, Sep 26, 2011 at 12:05 PM, Katie Boyle katielbo...@gmail.com wrote:
Hi All,
I was wondering how I take a list of 250 discrete values and match up each
value in the list to a color in the gist_rainbow colormap. I want the
highest value to be red, and the lowest value to be blue. I then want to
plot a point for each value in the list, and the point's color should
represent its value. I cannot use contourf or any other function that does
this automatically on a continuous grid--I need to plot individual points.
I think you are looking for scatter, with the c argument being
your intensity value. You can pass the gist_rainbow colormap to the
scatter function via the cmap argument. See these examples
http://matplotlib.sourceforge.net/examples/pylab_examples/scatter_demo.html
http://matplotlib.sourceforge.net/examples/pylab_examples/scatter_demo2.html
Eg,
In [43]: x, y, c = np.random.randn(3, 100)
In [44]: plt.scatter(x, y, c=c, cmap='gist_rainbow')
Out[44]: matplotlib.collections.PathCollection object at 0x981b22c
--
All the data continuously generated in your IT infrastructure contains a
definitive record of customers, application performance, security
threats, fraudulent activity and more. Splunk takes this data and makes
sense of it. Business sense. IT sense. Common sense.
http://p.sf.net/sfu/splunk-d2dcopy1
___
Matplotlib-users mailing list
Matplotlib-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/matplotlib-users
