Ben: That's what I did: plt.show() then plt.savefig(). I now know to reverse
the order. Thanks! - Roy
On Fri, Jul 29, 2011 at 7:32 PM, Benjamin Root <ben.r...@ou.edu> wrote:
> On Fri, Jul 29, 2011 at 6:19 PM, Roy Lowrance <roy.lowra...@gmail.com>wrote:
>
>> I'm using matplotlib on ubuntu 11.04.
>>
>> I create a figure and an axes and then show it via plt.show().
>>
>> From the window that plt.show() opens, I save the file to plot-3.png. This
>> works as I can open the file with evince.
>>
>> However, when my program executes plt.savefig('plot-3.png'), something is
>> saved as a file is created, but when I open the file with evince (or GIMP),
>> I see just the canvas, not the figure.
>>
>> How do I save under program control?
>>
>> - Roy
>>
>>
> There are a few common mistakes that might have happened. First, if you
> did a plt.show() and then closed the displayed figure, and *then* saved the
> figure, you will be saving the image of a new figure as you have already
> "destroyed" the old figure. If this is the case, put the savefig command
> *before* plt.show().
>
> Another possibility is that another figure was somehow created between the
> last plotting
> function and the call to savefig(). plt.savefig() assumes the current
> (active) figure, and so if another figure is accidentially created before
> calling savefig(), then you will be saving a blank figure.
>
> I hope this helps, and let us know if you have further questions!
> Ben Root
>
>
--
Roy Lowrance
home: 212 674 9777
mobile: 347 255 2544
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