using ft_freqstatistics with 4 arguments

[Oakman, Erin]

Hi Fieldtrip list,

Apparently the nonparametric freqstatistics funtion can be used with a mixed design, to compare power between 2 groups and 2 conditions, using cfg.method = 'montecarlo'.  

 I am giving 4 arguments to ft_freqstatistics. 
stats = ft_freqstatistics(cfg, group1-condition1, group1-condition2, group2-condition1, group2-condition2)

>>From Robert's suggestion here https://listserv.surfnet.nl/scripts/wa.cgi?A2=ind0803&L=FIELDTRIP&P=R13471, the design matrix has been set up with 1 row for the condition (condition numbers "1", "2"), a second row with the subject number and a third row for the two groups ("1", "2").  I set:

cfg.ivar = 1;
cfg.uvar = 2;
cfg.wvar = 3;

The trouble is with resampledesign.m, using it in combination with ft_freqstatistics.   When resampledesign.m splits the design matrix into a smaller design matrix, using cfg.war, I get the error
??? the design matrix variables should be constant within a block

The design matrix is 3 X 100, like this:
condition:         1 1 1 1 1 2 2 2 2 2   1 1 1 1 1 2 2 2 2 2 
subj number:   1 2 3 4 5 6 7 8 9 10  1 2 3 4 5 6 7 8 9 10 
group:              1 1 1 1 1 1 1 1 1 1    2 2 2 2 2 2 2 2 2 2  

Should a different design matrix be used in this case? 
Should cfg.wvar = 2 ?


Erin




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