Re: [matplotlib-devel] fix for "errorbar" method skipping over plot color cycle

[Manuel M. <mm...@as...>]

Erik Tollerud wrote:
> It'd be nice to get this into the new release unless it has been
> somehow fixed by some other code path in the latest svn... the line
> numbers on the diff are no longer accurate, but the idea is still the
> same - just change all lines of the form
> 
> caplines.extend( self.plot(leftlo, ylo,ls=None,
> marker=mlines.CARETLEFT, **plot_kw) )
> to
> caplines.extend( self.plot(leftlo, ylo, 'k|', marker=mlines.CARETLEFT,
> **plot_kw) )
> 
> e.g. change the ls=None to 'k|' and the color cycle is not
> interrupted.  I don't have the 1.1 numpy yet, so I haven't explicitly
> tested it, but I don't see why anything would have changed...
> 
> On Tue, Feb 12, 2008 at 10:46 PM, Erik Tollerud <eri...@gm...> wrote:
>> After a little testing on the subversion repository, the attached diff
>> seems to work.
>>
>> On Feb 10, 2008 12:12 AM, Erik Tollerud <eri...@gm...> wrote:
>>> I noticed while making some plots with upper bound error bars that
>>> whenever Axes.errorbars is called with any of the errorbars chosen as
>>> upper or lower bounds, that the color cycle was off, skipping over 2
>>> colors each time another errorbar plot was made (e.g. the first would
>>> be green and the second would be cyan instead of blue,green,red,cyan).
>>> Looking into the axes class, it appears that if you don't specify a
>>> color and want the markers to be drawn over the errorbars, the color
>>> cycle has already been skipped over one because of calls to draw the
>>> markers into the plot.  The solution is to change all the lines that
>>> say " ls='None' " in the errorbar method to instead say " ls='k' " -
>>> this will prevent those calls from cycling the colors, and hence only
>>> the call to actually draw the markers will do so.  Can this patch be
>>> committed to svn?
>>>
>>
>>
>> --
>> Erik Tollerud
>> Graduate Student
>> Center For Cosmology
>> Department of Physics and Astronomy
>> 4155B Frederick Reines Hall
>> University of California, Irvine
>> Office Phone: (949)824-2996
>> Cell: (651)307-9409
>> eto...@uc...
>>
> 
> 
> 

Hi Erik,

   I don't see the color cycle broken in the latest svn version (but it 
might be broken in the 0.91 maintenance branch).

Manuel