On Sun, Sep 20, 2009 at 11:45 PM, bwgoudey <bwgou...@gmail.com> wrote: > > I'm trying to draw a scatter plot where each point is a different colour and > is only a single pixel. Unfortunately at the minute, while I can change the > colour and size, I haven't been able to remove the edges of the markers and > my single pixel becomes the colour of the edge. I've attached some sample > code below. Can anyway see what I've done wrong? It currently just gives > back an error. >
Your code works as expected with the current svn head. If you're using older version of mpl, can you try to update and see if it solves the problem? If you're using recent version of mpl, please post an error message you got. > And a related question. Is using scatter the best way to draw a plot of > single pixels? Or would it be more efficient to use one of the more > primitive classes to do this? > matplotlib basically creates a vector-based plot, and a notion of "single-pixel" is not very meaningful. While it makes some sense for raster output formats like png, but still, the result depends on the dpi of your output. Note that unit for the parameter "s" in the scatter function is in points(**2). 1 points corresponds to one pixel in dpi=72. With higher dpi, the scatter points will occupy more than a single pixel. Regards, -JJ > > fig = plt.figure() > ax = fig.add_subplot(111) > > x=[1,2,3,4] > y=[2,3,5,4] > s=1 > c=[0.4, 0.2, 0.3, 0.5] > > prop=dict(edgecolors='none') > ax.scatter(x,y, s=s, c=c, **prop) > plt.show() > -- > View this message in context: > http://www.nabble.com/Changing-edge-colour-of-scatterplot-tp25530171p25530171.html > Sent from the matplotlib - users mailing list archive at Nabble.com. > > > ------------------------------------------------------------------------------ > Come build with us! The BlackBerry® Developer Conference in SF, CA > is the only developer event you need to attend this year. Jumpstart your > developing skills, take BlackBerry mobile applications to market and stay > ahead of the curve. Join us from November 9-12, 2009. Register now! > http://p.sf.net/sfu/devconf > _______________________________________________ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users > ------------------------------------------------------------------------------ Come build with us! The BlackBerry® Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9-12, 2009. Register now! http://p.sf.net/sfu/devconf _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
