[Qgis-developer] Problems with Atlas and Map dimensions on composer using Python

[Alexander Bruy]

Hi,

I have similar issue: composer map changes its dimensions when
scale and extents changed. I posted question in this list some time
ago [0].

Seems it is impossible to keep composer map size and position
locked. IMO this is big issue that makes composer templates
useless in some cases.

[0] http://www.mail-archive.com/qgis-developer@lists.osgeo.org/msg15587.html

2013/6/24 Stott James <fmrojst at fylkesmannen.no>:
> Hi all,
>
> Is anyone else having problems with using atlas with python?
>
> I am writing some python code that uses the Atlas functionality in master to
> create a PDF / jpg for each of my 5000 records.
>
> I can produce a jpg/pdf for each feature, however the composerMap object
> does not stay the same size.
>
> I found this bug report which describes the issue. This report is listed as
> fixed:
>
> http://hub.qgis.org/issues/6956
>
> I have set the following two lines in my code:
>
> myAtlas.setFixedScale( False )
> myAtlas.setMargin(0.1)
>
> If I set this up from within QGIS, it works perfectly. It is only through
> Python I have problems.
>
>
>
> Here are the example exported jpgs:
>
>
>
> Generated inside QGIS GUI
>
>
>
> https://docs.google.com/file/d/0B6r5nAOdEBZrbFk0UUdxOVdTRVk/edit?usp=sharing
>
>
>
> Generated from python
>
>
>
> https://docs.google.com/file/d/0B6r5nAOdEBZrZVJmWlpBb1c4Q2M/edit?usp=sharing
>
>
>
> I have also included a stripped down version of my code, along with a sample
> shapefile (this isn’t the data I am planning to use it with, but it doesn’t
> work with either the sample or the real data).
>
>
>
> https://docs.google.com/file/d/0B6r5nAOdEBZrRUpzZm81cU1pUkk/edit?usp=sharing
>
>
>
> Using master, updated today from OsGeo4W.
>
>
>
> Many thanks,
>
>
>
> James Stott

-- 
Alexander Bruy