I need to create a sample from an m by n matrix. Each row has a probability associated with it and can be treated as one observation. I need to draw N (the sample size) number of these rows based on their assigned probability. The problem is that randsample only takes a vector as input such as this example:
R = randsample([1 2 3], N, true, [0.5 0.25 0.25])
Whereas I need something like this:
R = randsample([1 2 3; 4 5 6; 7 8 9], N, true, [0.5 0.25 0.25])
So far I've not found an answer from Google, so I'd appreciate any pointers.
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