Thread: [Matplotlib-users] Plotting two histograms

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matplotlib-users

[Matplotlib-users] Plotting two histograms

From: Tommy G. <tg...@ma...> - 2007-04-06 16:53:41

I have two lists that I would like to plot as two separate histograms  
inside the same
plot. However

pylab.hist(h1list,26,facecolor='r')
pylab.hist(h2list,26,alpha=0.3)
pylab.show()

seems to plot the two histograms with different x-y limits on the  
axis. Also how can
I force the bins to have the same start and end?

Cheers
   Tommy

Re: [Matplotlib-users] Plotting two histograms

From: Jeff W. <js...@fa...> - 2007-04-06 17:04:41

Tommy Grav wrote:
> I have two lists that I would like to plot as two separate histograms  
> inside the same
> plot. However
>
> pylab.hist(h1list,26,facecolor='r')
> pylab.hist(h2list,26,alpha=0.3)
> pylab.show()
>
> seems to plot the two histograms with different x-y limits on the  
> axis. Also how can
> I force the bins to have the same start and end?
>
> Cheers
>    Tommy
>
>   

Tommy:  Use the 'bins' keyword to pylab.hist 
(http://matplotlib.sourceforge.net/matplotlib.pylab.html#-hist).

-Jeff

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Re: [Matplotlib-users] Plotting two histograms

From: Tommy G. <tg...@ma...> - 2007-04-06 17:17:40

On Apr 6, 2007, at 1:04 PM, Jeff Whitaker wrote:

> Tommy Grav wrote:
>> I have two lists that I would like to plot as two separate  
>> histograms  inside the same
>> plot. However
>>
>> pylab.hist(h1list,26,facecolor='r')
>> pylab.hist(h2list,26,alpha=0.3)
>> pylab.show()
>>
>> seems to plot the two histograms with different x-y limits on the   
>> axis. Also how can
>> I force the bins to have the same start and end?
>>
>> Cheers
>>    Tommy
>>
>>
>
> Tommy:  Use the 'bins' keyword to pylab.hist (http:// 
> matplotlib.sourceforge.net/matplotlib.pylab.html#-hist).

Thanks. I noticed that on my own and for the first time in my python  
programming history
used a list comprehension to generate the bins list :) The histograms  
are now displayed
correctly.

Cheers
   Tommy