removeblobs() does not remove blobs from surface maps

[yonestar]

With the 'full' montage type, removeblobs() will remove blobs from all the other montages, but not from the surface displays (the top row)

[danweflen]

Could you be more specific? Which function is calling removeblobs(), and what data are you using?

[yonestar]

Upon some further examination, I believe this is because the blobs that get plotted on surfaces are not being correctly added to the fmridisplay object, and since they are not correctly added, they cannot be removed. One way to reproduce the bug:

o1 = canlab_results_fmridisplay([], 'montage_type', 'full', 'overlay', underlay); o1 = multi_threshold(some statistic_image you loaded in, 'o2', o1, 'thresh', [.001 .005], 'sizethresh', [10 1]); o1 = removeblobs(o1);

And note that the blobs on the surface montages are not removed.

I believe the bug is actually somewhere in the addblobs functions. Specifically, on line 395 of addblobs I think the cluster_surf command needs to add the surface blobs back to obj.activation_maps{wh_to_display}.blobhandles

[torwager]

Ok, this is because blobs are added to surfaces in a very different way - they are not handles ... it actually colors the surface vertices. removeblobs has not yet been extended to handle this. the way to do it is to find surface handles and re-set the vertex colors to gray for those surfaces. There is a function to do this, I think referenced in addbrain.m (or a subfunction within addbrain.m). removeblobs would then check for surface handles stored/registered in the fmridisplay object, and re-set vertex colors for each of those surface objects.