[Mne_analysis] mne-python: simple topographic plot

[Emanuele Olivetti]

Hi Denis,

Thank you for pointing me to those PRs. I had a brief look to them but, to be 
honest, I did not
find what I was looking for. In the the meanwhile I coded this simple function 
which use
matplotlib's griddata and pcolormesh to create a topography, following this:
http://stackoverflow.com/questions/3864899/resampling-irregularly-spaced-data-to-a-regular-grid-in-python

Please find attached the short topography code and jpg example. Beware: the code 
is ugly :).
But maybe someone else might find it useful.

Best,

Emanuele



On 04/22/2013 03:28 PM, Denis-Alexander Engemann wrote:
> Hi Emanuele,
>
> take a look at this PR by Alex:
> https://github.com/mne-tools/mne-python/pull/392
>
> and this one by Christian:
> https://github.com/mne-tools/mne-python/pull/404
>
> It shouldn't be difficult to merge this soon and add it as an alternative to 
> the viz module.
> However it seems the focus has been put on other things in the last months, 
> especially as nobody asked for this.
> We now have a good reason for speeding up ;-)
>
> Cheers,
> Denis
>
>
> On Mon, Apr 22, 2013 at 2:37 PM, Emanuele Olivetti <emanuele at relativita.com 
> <mailto:emanuele at relativita.com>> wrote:
>
>     Hi,
>
>     First of all thank you for mne-python: it is very well done and effective!
>
>     I'd like to create simple topographic plots from the results of statistical
>     tests that I am conducting on gradiometer data (evoked responses) of our
>     Elekta
>     Neuromag. From what I see in the documentation many rich functions are
>     available in the mne.viz module but I cannot find the simple one that given a
>     coefficient for each channel (e.g. t-statistic between two conditions) and a
>     layout ('Vectorview-grad.lout', in my case, if I understand correctly), plots
>     the topography like
>
>     http://dev.pymvpa.org/_images/ex_topo_plot.png
>     http://fieldtrip.fcdonders.nl/_media/tutorial/eventrelatedaveraging/topoplot_fic_3feb09_erf.png
>
>     or like this mne-python plot, but without clickable sensors and timecourses:
>
>     http://martinos.org/mne/auto_examples/plot_topography.html
>
>     ...a simple colored box for each channel would suffice.
>
>     Any hints?
>
>     Best,
>
>     Emanuele
>
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