Deleting a a part of a dimension in a 4D array

Hi,

I have a 4D array of MR images that are 64 x 64 x 128 x 16. side=64 # of images=128 # of slices in one image=16

I want to delete the last 6 of the slices

So basically, I want my array to look like 64 x 64 x 128 x 10

Can someone please help me. Thanks!

Answer 1

[the cyclist]

If X is your array, then

 X(:,:,:,11:end) = [];

removes the 11th-16th slices in the 4th dimension.

[Med_Imager]

Worked like a charm! Thank you!

[the cyclist]

Keep Sean's technique in mind, too. Depending on the situation, it is sometimes more natural to "keep" certain slices than it is to delete certain slices.

[Madeleine Dacey]

How would you remove just one of the volumes? i.e. say you want to remove only the 11th image.

[the cyclist]

X(:,:,:,11) = [];

Answer 2

[Sean de Wolski]

V = V(:,:,:,1:10); %all rows, all columns, all pages, 1:10, 4ds