Which version of matplotlib are you using? This is (I suspect) the result of a known bug in matplotlib that has been fixed since the latest release. In plots with large numbers of points, invisible points are automatically removed to increase performance and reduce file sizes, but this behavior was not fully correct.
You can either install the 0.99.x branch from SVN, or, as a workaround, set "path.simplify" to False in your matplotlibrc, at the expense of performance and file size. Mike stefan wrote: > Hi, > > I want to plot a line with very sharp features and many data points. If I > plot > the data with markers, the features can be seen perfectly. But if I choose > the > line style just to be '-' (which is also default), the peaks are not shown > anymore. If I use something like '-o', the peaks are there, but the line does > not fully join the individual markers at the peak. Is the '-' style doing > some > averaging before plotting or is it a rendering problem? And any suggestions > how to get rid of it? > > Thanks a lot! > > Stefan > > ------------------------------------------------------------------------------ > Return on Information: > Google Enterprise Search pays you back > Get the facts. > http://p.sf.net/sfu/google-dev2dev > _______________________________________________ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users > -- Michael Droettboom Science Software Branch Operations and Engineering Division Space Telescope Science Institute Operated by AURA for NASA ------------------------------------------------------------------------------ Return on Information: Google Enterprise Search pays you back Get the facts. http://p.sf.net/sfu/google-dev2dev _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
