Removing part of a dimension

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Mathijs Dijsselhof
Mathijs Dijsselhof 2019-11-26
评论： Mathijs Dijsselhof 2019-11-26
Hi all,
I have a 4D MRI dataset of 80 x 80 x 16 x 23 from which I calculate movement outliers based upon standard deviation. I receive as output an logical array of 1x23 showing outliers with a value of 0. Example: OutlierArray = [1 1 1 1 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1]
I want to remove the outlier located at, in this case, the 5th volume using the 'OutlierArray' variable and concatenate the remaining volumes.
The resulting 4D dataset would then look like 80 x 80 x 16 x 22.
Can someone please help me? Thanks in advance!

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Turlough Hughes
Turlough Hughes 2019-11-26
编辑：Turlough Hughes 2019-11-26
Hi Mathijs,
If your data is called MRI, then the following should do the job:
MRI(:,:,:,logical(OutlierArray))=[];
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Mathijs Dijsselhof
Mathijs Dijsselhof 2019-11-26
Thanks this works!
I also found my own solution:
A(:,:,:,OutlierArray>0)

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