[R] Collapse an array

From: Gang Chen <gangchen_at_mail.nih.gov>
Date: Thu, 28 Feb 2008 15:05:33 -0500


Suppose I have a 4-D array X with dimensions (dx, dy, dz, dp). I want to collapse the first 3 dimensions of X to make a 2-D array Y with dimensions (dx*dy*dz, dp). Instead of awkward looping, what is a good way to do this? Is there a similar function like reshape in Matlab?

Thanks,
Gang



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