extract same row from multiple matrices
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Hi, I have collected data from approx. 100 participants in my study where each row corresponds to (x-axis coordinates only) mouse movements of a particular stimulus. I would like to automate the extraction of the data from all matrices for each row into a new matrix, i.e. all row1s of the 100 matrices end up in Matrix1, all row2s end up in Matrix2 etc.
1. all files are labeled path_person_[# of participant].mat, e.g. path_person_3.mat for participant 3.
2. only extract data from every 100th column (there are 30,000 columns)
3. all files are in the same folder.
How can I achieve that? Thank you!
4 Comments
Answers (2)
per isakson
on 29 Nov 2012
Your matrix, M, is 50MB. Try
M1 = M( :, [ 1 : 100 : 30000 ] );
4 Comments
Jan
on 7 Jan 2013
I do not have the impression that the email notifications are reliably. Sometimes I get 8 notifications in some minutes from the FileExchange, then no further messages for the next year. Comments to the question do not trigger a notification (or at least did not), although this is important.
Sabine
on 11 Jan 2013
1 Comment
Image Analyst
on 11 Jan 2013
You were using it correctly (until now). What you posted here is not an answer to your original question, is it? No, so it should either be a comment to someone who answered your question, or an edit of your original question to clarify it. If you don't get emails when comments are added, then that is a deficiency of the forum. Regardless, questions are often answered quickly here - in minutes or hours - so you should check back frequently for updates.
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