On 12-02-07 08:40 AM, Michael Droettboom wrote:
> On 02/07/2012 10:48 AM, Benjamin Root wrote:
>>
>>
>> On Tue, Feb 7, 2012 at 8:33 AM, Fabien Lafont
>> <lafont.fab...@gmail.com
>> <mailto:lafont.fab...@gmail.com>> wrote:
>>
>>     Is it possible to set the extension .pdf as defaut when I save an
>>     image using the matplotlib bar. My coworkers are always saving the
>>     image in png and it's really ugly!
>>
>>     Thx,
>>
>>     Fab
>>
>>
>> Interesting request. Looking through the backends, it appears that only the
>> Cairo backend currently supports a configurable rcParam for the default
>> filetype ('cairo.format'). All backends implement a "get_default_filetype()"
>> method for their canvases, but most of them have that default hard-coded as
>> "png". This really only makes sense for backends like agg, pdf, ps and such.
>>
>> Devs - Maybe we should consider fixing this for the non-fileformat specific
>> backends? Do we want an rcParam for each backend? Or a single rcParam for
>> default filetypes and deprecate 'cairo.format'?
>
> I would definitely lean toward the latter -- unify it under a single rcParam.
>
> Mike

Sorry for posting to an old thread, but I just submitted a pull request that 
implements this, AFAICT:

https://github.com/matplotlib/matplotlib/pull/907

Martin


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