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Dear all, 

Could you guys share your experience on:
How to adjust the size and scale of the x-y axis of the plot (e.g. how to
resize the "0 1 2" on x axis ), Thanks?
And special commands in matplotlib?

Thank you so much in advanced.
MQMQ
-- 
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On 1/20/12 3:12 AM, Mathew Topper wrote:
> Hi Jeff,
>
> Sorry, an XYZ file is simply an ASCII file which can have either 
> LON,LAT,HEIGHT entries or Cartesian X,Y,HEIGHT entries. I think I have 
> confused myself a little here, as all I need to do is print the 
> LON,LAT,HEIGHT data to a file and I've finished, and basemap is not 
> required for this. The original question was whether once a basemap 
> had been defined is there an easy way to extract the Cartesian 
> coordinates to produce an XYZ file containing the Cartesian 
> coordinates for the chosen projection rather than the geographic ones?
>
> Thanks
>
> Mat
>
> PS. This is in all in the context of converting data for use in a 
> software package called MIKE. It sadly lacks the ability to deal with 
> NetCDF files directly.

Mat:  If you have the longitudes and latitudes in numpy arrays lons, 
lats, and m is a Basemap instance,

x,y = m(lons,lats)

gives you the projection coordinates.

-Jeff
>
> On 19/01/12 16:54, Jeff Whitaker wrote:
>> On 1/19/12 5:55 AM, Mathew Topper wrote:
>>> Hi,
>>>
>>> I was wondering how hard it would be to generate xyz format files 
>>> from netcdf files using python-netcdf4 and basemap? It seems that 
>>> basemap has the capabilities to do those sort of conversions, but I 
>>> am a bit of a novice to map data and I'm not sure what would be the 
>>> correct approach to this.
>>>
>>> Many Thanks
>>>
>>> Mat
>> Mat:
>>
>> What's an xyz file?
>>
>> -Jeff
>> -- 
>> Jeffrey S. Whitaker         Phone  : (303)497-6313
>> Meteorologist               FAX    : (303)497-6449
>> NOAA/OAR/PSD  R/PSD1        Email  :Jef...@no...
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>> Boulder, CO, USA 80303-3328 Web    :http://tinyurl.com/5telg
>
> -- 
> Dr. Mathew Topper
> Institute for Energy Systems
> School of Engineering
> The University of Edinburgh
> Faraday Building
> The King’s Buildings
> Edinburgh EH9 3JL
> Tel: +44 (0)131 650 5570
> School fax: +44 (0)131 650 6554
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> http://www.see.ed.ac.uk <http://www.see.ed.ac.uk/>
>
>
> The University of Edinburgh is a charitable body, registered in
> Scotland, with registration number SC005336.

The University of Edinburgh is a charitable body, registered in
Scotland, with registration number SC005336.

The animation code is currently not fully implemented in the MacOSX backend because the way the general framework of animations is set up in Matplotlib (at least last time I checked) is not compatible with drawing on Mac OS X. In particular, the problem is that on Mac OS X all drawing should be done from inside the event loop; the animations code also tries to draw outside of the event loop. Somebody would have to go through the animations code in matplotlib to sort this out. See e.g. this previous thread on the devel mailing list:

http://sourceforge.net/mailarchive/forum.php?thread_name=989472.4458.qm%40web62407.mail.re1.yahoo.com&forum_name=matplotlib-devel

Best,
-Michiel.

--- On Sun, 1/15/12, Nathan Salomonis <nsa...@gm...> wrote:

From: Nathan Salomonis <nsa...@gm...>
Subject: [Matplotlib-users] Animation example error on Mac after installation
To: mat...@li...
Date: Sunday, January 15, 2012, 2:14 AM

Greetings,

I just installed matplotlib on my Mac OS 10.6 Machine (64bit) with default Python 2.7.1 (easy_install). While the initial 2D graph examples work great, when testing any of the animations, such as:
http://matplotlib.sourceforge.net/examples/animation/simple_anim.html


I always get the same error:

File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/animation.py", line 248, in _blit_clear
    a.figure.canvas.restore_region(bg_cache[a])

AttributeError: 'FigureCanvasMac' object has no attribute 'restore_region'

Since "restore_region" is only in backend_agg.py and not in backend_macosx.py, After reading more on this, I thought this might be corrected by re-installing from source and setting the setup.cfg to macosx = True and backend = MacOSX prior to building, but this did not correct the issue. Also, changing backend: Agg to backend: MacOSX in:

/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/mpl-data/matplotlibrc

didn't work either. Does anyone have experience with this or further insight?

Thanks,

Nathan




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