matplotlib-devel Mailing List for matplotlib

On Thu, Sep 15, 2011 at 1:19 PM, Phil Elson <phi...@ho...> wrote:
> Hi,
>
> I would like the ability to setup a plot projection in MPL that can be
> defined by various parameters and does not need to be serialised as a string
> and registered with *matplotlib.projections.register_projection*. For
> example, an extension of /examples/api/custom_projection_example.py might be
> to add the ability to define the central meridian to an arbitrary value
> rather than the current value of 0 - in this case I would expect to define
> the projection by creating an object which can then be turned into a
> matplotlib axes:
>
> *hammer_proj = Hammer(central_meridian=45)
> ax = plt.subplot(111, projection=hammer_proj)
> *
>
>
> I have made a change to matplotlib which would enable this capability,
> which can be found at
> https://github.com/PhilipElson/matplotlib/commit/9c7b1b27d0245a752d010bd03ae66dc6c000d8e499. Any feedback and thoughts would be really appreciated with the ultimate
> goal of getting this functionality into MPL.
>
> Many Thanks,
>
> Philip
>
>
Hmm, interesting idea. I took a quick look through the code, and it touches
on some fragile parts of axes.py, so I wouldn't be comfortable with this
being in v1.1.0, but I think it is definitely worthy of further
investigation.
As a bit of a selfish interest, I think your approach might open up a
possible approach for a long-standing problem of mine with 3d projections.
Axes3D objects want to fill its entire plot box, but when created through a
subplot mechanism, the defaults get over-ridden. I wonder if this approach
with _init_axes() passing kwargs might provide me with the hook to fix this.
Ben Root

Sorry, that link was bad, it should have read:
https://github.com/PhilipElson/matplotlib/commit/9c7b1b27d0245a752d010bd03ae66dc6c000d8e4
To: mat...@li...
Date: 2011年9月15日 18:19:49 +0000
Subject: [matplotlib-devel] Initialising projections in matplotlib
Hi, 
I would like the ability to setup a plot projection in MPL that can be defined by various parameters and does not need to be serialised as a string and registered with matplotlib.projections.register_projection. For example, an extension of /examples/api/custom_projection_example.py might be to add the ability to define the central meridian to an arbitrary value rather than the current value of 0 - in this case I would expect to define the projection by creating an object which can then be turned into a matplotlib axes:
hammer_proj = Hammer(central_meridian=45)
ax = plt.subplot(111, projection=hammer_proj)
I have made a change to matplotlib which would enable this capability, which can be found at https://github.com/PhilipElson/matplotlib/commit/9c7b1b27d0245a752d010bd03ae66dc6c000d8e499 . Any feedback and thoughts would be really appreciated with the ultimate goal of getting this functionality into MPL.
Many Thanks,
Philip
 		 	 		 
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On Thu, Sep 15, 2011 at 1:19 PM, Phil Elson <phi...@ho...> wrote:
> I have made a change to matplotlib which would enable this capability, which
> can be found at
> https://github.com/PhilipElson/matplotlib/commit/9c7b1b27d0245a752d010bd03ae66dc6c000d8e499
> . Any feedback and thoughts would be really appreciated with the ultimate
> goal of getting this functionality into MPL.
I'm getting a 404 error when I try that URL. The preferred method of
contribution is to submit a pull request
http://matplotlib.sourceforge.net/devel/gitwash/development_workflow.html#asking-for-your-changes-to-be-merged-into-the-main-repo

Hi, 
I would like the ability to setup a plot projection in MPL that can be defined by various parameters and does not need to be serialised as a string and registered with matplotlib.projections.register_projection. For example, an extension of /examples/api/custom_projection_example.py might be to add the ability to define the central meridian to an arbitrary value rather than the current value of 0 - in this case I would expect to define the projection by creating an object which can then be turned into a matplotlib axes:
hammer_proj = Hammer(central_meridian=45)
ax = plt.subplot(111, projection=hammer_proj)
I have made a change to matplotlib which would enable this capability, which can be found at https://github.com/PhilipElson/matplotlib/commit/9c7b1b27d0245a752d010bd03ae66dc6c000d8e499 . Any feedback and thoughts would be really appreciated with the ultimate goal of getting this functionality into MPL.
Many Thanks,
Philip