From a usability point of view, returning a string to indicate nothing found is probably the worst. an empty value or 0 would be much better.
Guillaume, I would say that that depends upon the intended 'audience' for the output.
Return the largest number that is adjacent to a zero
Remove any row in which a NaN appears
convert matrix to single column
Matlab Basics II - Max & Index of Max
Matlab Basics II - Count rows in a matrix
Matlab Basics - Assigning Variables
Matlab Basics II - Velocity of a particle
Matlab Basics II - Intervals
Matlab Basics - Rounding III
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