Jeff Klukas wrote:
> Alright, I have attached a top-level diff that contains the changes to
> axes.py that allow sending multiple colors to the 'color' argument in
> Axes.hist.
> 
> Below is a short examples that passes lists to 'colors' and 'labels'.

Jeff,

Thanks.  I find that both hist and the patch need some additional 
reworking, which I will try to get done this weekend.

Eric

> 
> Cheers,
> Jeff
> 
> || Jeff Klukas, Research Assistant, Physics
> || University of Wisconsin -- Madison
> || jeff.klu...@gmail | jeffyklu...@aim | jeffklu...@skype
> || http://www.hep.wisc.edu/~jklukas/
> 
> ----------------------------------
> import pylab as P
> 
> mu, sigma = 200, 25
> x0 = mu + sigma*P.randn(10000)
> x1 = mu + sigma*P.randn(7000)
> x2 = mu + sigma*P.randn(3000)
> 
> P.figure()
> 
> colors = ['crimson', 'burlywood', 'chartreuse']
> labels = ['Crimson', 'Burlywood', 'Chartreuse']
> n, bins, patches = P.hist([x0,x1,x2], 10, histtype='bar',
>                           color=colors, label=labels)
> 
> P.legend()
> P.show()
> ---------------------------------
> 
> 
> 
> On Wed, Mar 31, 2010 at 1:27 PM, Eric Firing <efir...@hawaii.edu> wrote:
>> Jeff Klukas wrote:
>>> When plotting multiple data with one Axes.hist call, the method's
>>> interface allows you to specify a list of labels to the 'label' kwarg
>>> to distinguish between the datasets.  To get different colors,
>>> however, you cannot give a list of colors to 'color'; instead, you
>>> have to leave out the 'color' kwarg and change the color cycle.
>>>
>>> Is there any reason why the color kwarg can't work like label?  I
>>> spent an hour or two trying to debug a script before I realized that
>>> 'color' wasn't being interpreted as I expected.  I realize that there
>>> is some ambiguity since a color argument can be an rgb or rgba
>>> sequence.  My proposal would be that 'color' would be interpreted as a
>>> list of distinct colors only when multiple datasets are given as input
>>> and len(color) equals the number of datasets.
>>>
>>> I find it hard to imagine a case where you would want to set all
>>> datasets to be the same color, so I don't think the ambiguity would be
>>> a major issue.  I would be happy to write and submit an implementation
>>> if others think this is a reasonable idea.
>> Sounds good to me.  I agree that it makes no sense to have to set the color
>> cycle for hist (although using the color cycle as a default is reasonable),
>> and I think it is just an artifact of the way hist has evolved.
>>
>> Eric
>>
>>> Cheers,
>>> Jeff
>>>
>>> || Jeff Klukas, Research Assistant, Physics
>>> || University of Wisconsin -- Madison
>>> || jeff.klu...@gmail | jeffyklu...@aim | jeffklu...@skype
>>> || http://www.hep.wisc.edu/~jklukas/
>>>


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