This is indeed a bug. In some places in the code, I was casting from double to float (which is used by Mac OS X quartz internally) too soon. This created a roundoff error, which shows up as the jagged plot. I am preparing a patch and will submit it as soon as possible. Thanks for reporting this bug.
--Michiel. --- On Mon, 1/12/09, Tony Yu <tsy...@gmail.com> wrote: > From: Tony Yu <tsy...@gmail.com> > Subject: [matplotlib-devel] Jagged plot in macosx backend > To: "matplotlib development list" <matplotlib-devel@lists.sourceforge.net> > Date: Monday, January 12, 2009, 2:59 PM > There appears to be a bug in the macosx backend. When I plot > large numbers with small variations in the value, the > numbers seem to be coarsely rounded off. This bug > doesn't appear with other backends (I tried WxAgg and > TkAgg). Below is a simple script showing the problem and the > resulting plot on the macosx backend. > > Thanks, > -Tony > > Mac OS X 10.5.6 > Matplotlib svn r6779 > > #~~~~~~~~ > > import numpy as np > import matplotlib.pyplot as plt > > x = np.linspace(0, 1) > plt.plot(x, x + 1e6) > plt.show()------------------------------------------------------------------------------ > This SF.net email is sponsored by: > SourcForge Community > SourceForge wants to tell your story. > http://p.sf.net/sfu/sf-spreadtheword_______________________________________________ > Matplotlib-devel mailing list > Matplotlib-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-devel ------------------------------------------------------------------------------ This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword _______________________________________________ Matplotlib-devel mailing list Matplotlib-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-devel
