Proper NaN handling has been a long and winding road. This particuar bug you're running into was fixed about a week *after* the 0.98.3 release. Here's the patch:
http://matplotlib.svn.sourceforge.net/viewvc/matplotlib?view=rev&revision=6018 So SVN trunk currently works. The patch against 0.98.3 is non-trivial -- there were actually many changes throughout the code to make all this work, so there isn't an easy workaround, and in any case requires a recompile. If you can build from SVN, that's what I would suggest -- otherwise wait for the 0.98.4 release (I don't believe we have an ETA on that, yet). Cheers, Mike Goyo wrote: > I'm having trouble plotting data with NaN values. My plot has lines and > markers and usually both are skipped for NaN values. But when I have > more than 127 data a line is drawn from the last non-NaN to the next. > > I read somewhere about a similar issue (maybe here? sorry I can't find > it just now), it seems like it has to do with some optimization > performed for large datasets and the use if lineto instead of moveto or > something like that. It was supposed to be fixed in 0.98.2 but I'm using > 0.98.3 from Benjamin Drung's PPA (http://ppa.launchpad.net/bdrung). > > This code shows the difference between plotting 127 and 128 data (look > at the left of each figure): > > import pylab as pl > x = pl.random(128) > x[4:7] = pl.NaN > y = x[:-1] > pl.figure(1) > pl.plot(x, '-o') > pl.grid(True) > pl.figure(2) > pl.plot(y, '-o') > pl.grid(True) > pl.show() > > Is this a known issue? Is there any workaround? > > Thanks > > Goyo > > > ------------------------------------------------------------------------- > This SF.Net email is sponsored by the Moblin Your Move Developer's challenge > Build the coolest Linux based applications with Moblin SDK & win great prizes > Grand prize is a trip for two to an Open Source event anywhere in the world > http://moblin-contest.org/redirect.php?banner_id=100&url=/ > _______________________________________________ > 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 ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
