Re: [Matplotlib-users] problem with png image

[Petro K. <kho...@gm...>]

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.