Your definition of a constant (or invariant) data with rand is problematic. If you increase the size of your data (n=1000, n=10000...), you can always increase the deviations (so what threshold for sigma ?). I think that with real data, this artifact isn't possible. No ?
Nice solution that looks pretty nifty but it actually produces an unsafe result, just like Matlab's own zscore. It passed on it's first run trough the test suite but fails on some number of repeats. I've now added a second pass with a know random seed.
Replace NaNs with the number that appears to its left in the row.
High school cafeteria
Maintain shape of logical-index mask
Cody Computer Part 1 - Guess the system font used by uipanel
MATLAB Basic: rounding
Six Steps to PCA - Step 2: Covariance
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