nanmax (Statistics Toolbox)

Maximum ignoring NaNs.

Syntax

m = nanmax(a)
[m,ndx] = nanmax(a)
m = nanmax(a,b)

Description

m = nanmax(a) returns the maximum with NaNs treated as missing. For vectors, nanmax(a) is the largest non-NaN element in a. For matrices, nanmax(A) is a row vector containing the maximum non-NaN element from each column.

[m,ndx] = nanmax(a) also returns the indices of the maximum values in vector ndx.

m = nanmax(a,b) returns the larger of a or b, which must match in size.

Example

m = magic(3);
m([1 6 8]) = [NaN NaN NaN]

m =

   NaN     1     6
     3     5   NaN
     4   NaN     2

[nmax,maxidx] = nanmax(m)

nmax =

     4     5     6

maxidx =

     3     2     1