[Neuroimaging] add_data: Threshholding on absolute value

[Florian Aspart]

Hi all,

I'm trying to display the ICA components of my reconstructed sources (from
EEG signal) using pysurfer. I'd like to apply a threshold on the display to
show only the most relevant (i.e. with the biggest impact) areas. In this
case, this correspondd to points with the biggest absolute value.
Is there a way to apply a threshold on absolute value when using the
function add_data? Using the threshold function only work for the lower
threshold.

Digging a little bit in the code, I found out that the current thresholding
is done using the mayavi filter mlab.pipeline.threshold. Should I design my
own mayavi filter to do so? Do you know some nice introductory material on
how I could on this?

Best,
Florian
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