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Bug 2743 - error when calling ft_mvaranalysis (for granger connectivity computation)
| Status | CLOSED FIXED |
| Reported | 2014-10-22 11:29:00 +0200 |
| Modified | 2015-01-12 09:19:42 +0100 |
| Product: | FieldTrip |
| Component: | core |
| Version: | unspecified |
| Hardware: | PC |
| Operating System: | Linux |
| Importance: | P5 normal |
| Assigned to: | Jan-Mathijs Schoffelen |
| URL: | |
| Tags: | |
| Depends on: | |
| Blocks: | |
| See also: |
Stan van Pelt - 2014-10-22 11:29:50 +0200
ft_mvaranalysis throws the error below when called. There seems to be an (unclear) error in the time axes perhaps? Example dataset is attached. cfg = []; cfg.order = 5; cfg.toolbox = 'bsmart'; mdata = ft_mvaranalysis(cfg, dataBOWact); ??? Index exceeds matrix dimensions. Error in ==> ft_mvaranalysis at 326 tmpcfg.toilim = [timeaxis(sample-floor(tfwin/2)) timeaxis(sample+ceil(tfwin/2)-1)];
Jan-Mathijs Schoffelen - 2014-11-13 09:46:49 +0100
Stan, if this is still an issue for you, please upload some testdata somewhere (e.g. /home/common) and let us know it's there before it's erased again. If it's not an issue anymore, please close
Stan van Pelt - 2014-11-13 10:02:50 +0100
example data is now on temporary
Jan-Mathijs Schoffelen - 2014-11-13 10:07:39 +0100
bummer
Jan-Mathijs Schoffelen - 2014-11-13 10:11:43 +0100
OK, I copied the data over the /home/common/matlab/fieldtrip/data/test/bug_2743.mat
Jan-Mathijs Schoffelen - 2014-11-13 10:41:29 +0100
bash-4.1$ svn diff ft_mvaranalysis.m Index: ft_mvaranalysis.m =================================================================== --- ft_mvaranalysis.m (revision 9961) +++ ft_mvaranalysis.m (working copy) @@ -323,7 +323,7 @@ cfg.toi(j) = timeaxis(sample); tmpcfg = []; - tmpcfg.toilim = [timeaxis(sample-floor(tfwin/2)) timeaxis(sample+ceil(tfwin/2)-1)]; + tmpcfg.toilim = [timeaxis(sample-ceil(tfwin/2)) timeaxis(sample+floor(tfwin/2)-1)]; tmpcfg.feedback = 'no'; tmpcfg.minlength= 'maxperlen'; tmpdata = ft_redefinetrial(tmpcfg, data); bash-4.1$ svn add test/test_bug2743.m A test/test_bug2743.m bash-4.1$ svn commit -m "bugfix - solved rounding issue with odd-samplenumber tfwins" ft_mvaranalysis.m test/test_bug2743.m Sending ft_mvaranalysis.m Adding test/test_bug2743.m Transmitting file data .. Committed revision 9962.
Stan van Pelt - 2014-11-13 10:46:52 +0100
Great, looks perfect. Is not immediately implemented, or is it?
Jan-Mathijs Schoffelen - 2014-11-13 10:58:24 +0100
should be available soon on /home/common (in approx.20min)
Tyler - 2014-11-18 08:08:28 +0100
Im having the same issue, however it was after the bug fix. tmpcfg.toilim = [timeaxis(sample-ceil(tfwin/2)) timeaxis(sample+floor(tfwin/2)-1)]; When I run: sample-ceil(tfwin/2), I get 0, as both sample and ceil(tfwin/2) equal 1501 So when you index into timeaxis, it crashes with the same error.
Jan-Mathijs Schoffelen - 2014-11-18 09:10:08 +0100
Tyler, The numbers you mention don't have any meaning for us, unless we have some specific data to test. Did it work for you on the exact same data before the fix? What's the number of elements in the timeaxis, and what is the value for tfwin?