This demonstrates the *solution*--the problem is that scatter() does not automagically perform color mapping for the edge and face colors. Perhaps this is a 'feature', but if so (or even if not) maybe the documentation should be clarified (I figured 'c' and 'color' were equivalent, like other mpl functions, but this is NOT the case for scatter; none of the 'color' kwargs are automatically mapped).
On Tue, 14 Aug 2007, Joe Shmoe wrote: > Matthew Auger wrote the following on 08/13/2007 11:15 AM: >> I'm trying to make high-dimensionality scatter plots, but I've run into a >> couple of issues. I'm using scatter() but including both edge and face >> color mapping; I doubt this will provide a meaningful display, but I'd >> like to try it and see.... Unfortunately, passing data arrays to facecolor >> and edgecolor does *not* map the data arrays to colors--instead I get >> gray edges and/or faces. As a side note, none of the 'usual' keyword >> shortcuts (ec, fc, lw for example) work with scatter(). >> > > Does the following demonstrate the issue? > > -------------- > import pylab > x = [a for a in range(10)] > y = [a**2 for a in range(10)] > s = [a**3 for a in range(10)] > c = x > ec = c[:] > ec.reverse() > > a = pylab.scatter(x,y,s, > facecolor=pylab.cm.jet(c), > edgecolor=pylab.cm.jet(ec)) > > print a._facecolors > print a._edgecolors > > pylab.show() > ------------- > > So we create a scatter plot with different sizes, facecolors, and > edgecolors. The collection clearly has the facecolors/edgecolors > stored. However, resulting image does not show the different > facecolors/edgecolors. Each circle is given the default > facecolor/edgecolor (as axes.py indicates it should)...but It seems > like something is not getting updated. Comments anyone? ...seems > like a bug at first glance... > > Confirmed with version 0.90.1. > > ------------------------------------------------------------------------- > This SF.net email is sponsored by: Splunk Inc. > Still grepping through log files to find problems? Stop. > Now Search log events and configuration files using AJAX and a browser. > Download your FREE copy of Splunk now >> http://get.splunk.com/ > _______________________________________________ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users > ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
