Back to PLS HelpPosted on 11/16/12 18:03:59
Number of posts: 4
I get the following error message when I try to run a fMRI blocked design and I was wondering if anybody had encountered this message and new what it meant or how to fix the problem?
Attempted to access A(7.66667); index must be a positive integer or
logical.
Error in rri_boot_samples (line 59)
A(k)=A(k)+1;
Error in rri_boot_check (line 133)
boot_sample1 = rri_boot_samples(num_subj, diff_subj);
Error in fmri_pls_analysis (line 309)
[min_subj_per_group,is_boot_samples,boot_samples,new_num_boot]
...
Error in bfm_analysis_ui>ExecutePLS (line 1924)
fmri_pls_analysis(PLSoptions.profiles, [], ...
Error in bfm_analysis_ui (line 86)
ExecutePLS;
Replies:
I'm Online
Posted on 11/19/12 12:11:19
Number of posts: 291
Would you please upload your data to somewhere that I can have access, and post or send me the link? (Please do not attach anything to the email).
Posted on 11/20/12 13:04:12
Number of posts: 4
I'm Online
Posted on 11/20/12 13:28:42
Number of posts: 291
jshen@research.baycrest.org
I'm Online
Posted on 11/20/12 15:52:41
Number of posts: 291
I noticed that in some of your BfMRIdatamat.mat files, you only have 2 rows in 'st_datamat' variable, and 'st_evt_list' variable is [1 2].
Since you have 3 conditions, it should be 3 rows and [1 2 3]. Did you change the BfMRIdatamat.mat file manually after it has been created?
If not, could you please use the Test Data (dataset_001 etc) under
http://www.rotman-baycrest.on.ca/pls/source/Testdata.zip
to create 1 session/datamat? That way, I can duplicate your session/datamat create process here.
Posted on 11/22/12 17:28:33
Number of posts: 4
I have added the datamat and session file to the dropbox folder. I used the onset and duration time based on the times from my study for participant 1. Was that what you wanted me to do?
The fMRI data came from a block design. However, the onset and duration of the blocks are not consistent across participants. This was a VR navigation task and performance is based on how quickly each person finds a target location. Could the problem partially be because my duration times fluctuate across conditions and participants?
Leanne
I'm Online
Posted on 11/22/12 17:37:56
Number of posts: 291
If you have not modified datamat.mat manually, I will need to get all your raw data to create datamat from my computer. To make things simple, I suggested that you used the Testdata that I mentioned above first.
Login to reply to this topic.
