Possible bug with maskparameter and TFR?

[Matthew Davidson]

Hi, everyone.

I'm trying to mask TFR plots in ft_multiplotTFR.m. ft_clusterplot
seems inappropriate, because this is for intracranial data and a
topoplot isn't a good way to display that.

I couldn't find any good examples of using .maskparameter, so I did
what I thought was correct:

I loaded up the stat and the freq variables, and set:
freq.mask = stat.mask;
cfg.maskparameter = 'mask';

However, when ft_multiplotTFR gets to reading out the .mask field,
it's gone! It seems that because my dimord is 'rpt_chan_freq_time',
ft_multiplotTFR calls:
data = ft_freqdescriptives(tmpcfg, data), which only returns certain
fields, and effectively strips out my .mask field!

Am I doing this wrong? if so, what's the correct method? If not, I'll
be happy to submit a fix. What's the preferred way to fix it? In
ft_multiplotTFR, I could store the maskparameter before the call to
freqdescriptives, and readd it afterwards. Alternatively, I could just
change the initialization line in ft_freqdescriptives where it sets
output = []; to output = freq;. Then, the subsequent lines altering
output would still behave as planned, but any extra fields added to
freq would not be removed.

Matthew

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