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Bug 2492 - ft_plot_topo does not support transparency mask with values other than 0 or 1

Reported 2014-03-05 16:23:00 +0100
Modified 2019-08-10 12:32:44 +0200
Product: FieldTrip
Component: plotting
Version: unspecified
Hardware: PC
Operating System: Windows
Importance: P5 normal
Assigned to: Roemer van der Meij
Depends on:
See also:

Roemer van der Meij - 2014-03-05 16:23:32 +0100

There is a snippet of code currently commented out that implements 'graded' masking (using alphadata), but it is not used. The current masking relies fully on NaN'ing bits of the data that should be masked out (so it will be ignored during plotting), and does not use alphadata.

Jan-Mathijs Schoffelen - 2016-03-01 21:14:28 +0100

Is this something you would like to follow up on?

Roemer van der Meij - 2016-03-03 14:38:13 +0100

I made this bug because I wanted to implement transparency masking via saturation, and it would make sense to "unlock" it for opacity masking as well (which was disabled). The first will not work I realized last year, it was misconception it could have. I see no need to continue for the opacity case. If I do at some point I'll reopen ;)

Robert Oostenveld - 2019-08-10 12:32:44 +0200

This closes a whole series of bugs that have been resolved (either FIXED/WONTFIX/INVALID) for quite some time. If you disagree, please file a new issue on