Re: [Matplotlib-users] problem with png image

[Michael D. <md...@st...>]

Can you try the GtkAgg backend instead and confirm the bug isn't there?  
The "pure" Gtk backend doesn't see a lot of use these days and isn't 
very well tested.

Mike

On 08/22/2012 08:17 AM, Petro Khoroshyy wrote:
> Damon McDougall
> <dam...@gm...> writes:
>
>> On Wed, Aug 22, 2012 at 11:28:54AM +0200, Petro wrote:
>>> Hi list.
>>> I generate some png images using matplotlib, and get very different
>>> results depending on figuresize
>>> __________________________________________________________________
>>>    from pylab import figure, plot
>>>    import pylab as plt
>>>    import numpy as np
>>>    figure()
>>>    plt.subplot(2,1,1)
>>>    plot(np.random.rand(10),'o')
>>>    plt.subplot(2,1,2)
>>>    plot(np.random.rand(10),'o')
>>>    pic_name='fit_rates1.png'
>>>    path_name='/home/petro/tmp/'
>>>    plt.savefig(path_name + pic_name)
>>> __________________________________________________________________
>>>
>>> the code above generates the following image:
>>> https://lh3.googleusercontent.com/-107Ducz_CA0/UDShKMtejtI/AAAAAAAACls/YOeahS3tQA8/s400/fit_rates1.png
>>>
>>> now if I increase a figure  size parameter:
>>> __________________________________________________________________
>>>    from pylab import figure, plot
>>>    import pylab as plt
>>>    import numpy as np
>>>    plt.ioff()
>>>    from matplotlib import rcParams
>>>    golden_mean = (np.sqrt(5)-1.0)/2.0    # Aesthetic ratio
>>>    fig_width = 5.6  # width in inches
>>>    fig_height = fig_width*golden_mean    # height in inches
>>>    rcParams['figure.figsize']=fig_width, fig_height*3
>>>    figure()
>>>    plt.subplot(2,1,1)
>>>    plot(np.random.rand(10),'o')
>>>    plt.subplot(2,1,2)
>>>    plot(np.random.rand(10),'o')
>>>    pic_name='fit_rates2.png'
>>>    path_name='/home/petro/tmp/'
>>>    plt.savefig(path_name + pic_name)
>>>    
>> What backend are you using?
>>
>> print plt.get_backend()
> It outputs GTK.
>
>
>
>
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