Specify vmin vmax color range in animated topomap

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1

Hello,

I’m trying to export animated versions of EEG topomaps, using the mne.Evoked.animate_topomap function. I can’t seem to find a way to specify the bounds of the colormap range.
I used to use the vmin and vmax parameters of the mne.viz.plot_topomap function, for the static image but I can’t find the equivalent in the animated version.
Is there any way to do achieve that ? :slight_smile:

  • MNE version: e.g. 0.3.1
  • operating system: Windows 10
av_power =  mne.time_frequency.read_tfrs("../AV_TFR/...")[0]

def animate_topo(data,tmin,tmax,step):
    data.crop(fmin=8,fmax=30)
    
    data_8_30 = np.mean(data.data,axis=1)
    
    epo = EvokedArray(data_8_30, data.info)
    
    times = np.arange(tmin,tmax,step)
    fig,anim = epo.animate_topomap(times=times, ch_type='eeg', frame_rate=3, time_unit='s', blit=False,show=False)
    raw_signal.plot(block=True)
    return anim

anim = animate_topo(av_power ,6,24,1)
anim.save('animation.gif', writer='imagemagick', fps=3)
2

Hello, it appears this is currently not supported. Can you open a feature request on our GitHub issue tracker?

btw you probably shouldn’t call the EvokedArray instance epo :slight_smile:

Best wishes,
Richard

3

Hello,
Thank you for your fast answer, I opened a feature request here :slight_smile:
Good catch, I’ll fix it right away :see_no_evil:

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