delete rows in 3d-matrix

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Tim
Tim 2012-11-7
Hi all,
How can I delete a row in a 3d matrix? I want to delete the upper row in the matrices: stuff(:,:,1:3)
stuff(:,:,1(:,1))=[]
doesn't work..
"Unbalanced or unexpected parenthesis or bracket."
Does anyone know the answer? Thanks.
Cheers,
T
  2 个评论
Jan
Jan 2012-11-7
What exactly is "the upper row"?
Image Analyst
Image Analyst 2012-11-7
Not sure what you mean. In 3D people talk about a "slice" or a "plane" not a row. You can't eliminate just row 1 of slices 1, 2, and 3 because then the array is no longer rectangular - it would have a notch or chunk out of it. But you can get rid of a whole slice at a time.

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Tim
Tim 2012-11-8
Thought about this last night in bed and couldn't understand the stupid mindtwist I made, it's just simply:
stuff(1,:,:)=[]
And indeed it's the upper slice. My bad. Thanks anyway!
  1 个评论
Image Analyst
Image Analyst 2012-11-8
Normally slices are the last dimension, like Jan had. So I guess you're taking the left-most slice that lies in the (row, slice), or Y-Z plane, basically the left face of the data volume, at least according to how most people think of it.

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更多回答（1 个）

Jan
Jan 2012-11-7
stuff(:, :, 1) = []

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