[R] flatten a matrix and unflatten it
Bill Simpson
William.Simpson at drdc-rddc.gc.ca
Mon Mar 21 22:44:22 CET 2005
I want to flatten a matrix and unflatten it again. Please tell me how to
do it.
1. given a matrix:
x1 y1 z1
x2 y2 z2
...
xk yk zk
convert it to a vector:
x1, y1, z1, x2, y2, z2, ..., xk, yk, zk
2. given a vector:
x1, y1, z1, x2, y2, z2, ..., xk, yk, zk
convert it to a matrix
x1 y1 z1
x2 y2 z2
...
xk yk zk
It is known that the number of dimensions is 3.
Thanks for any help!
Bill
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