nanmedian (Statistics Toolbox)

Median ignoring NaNs

Syntax

y = nanmedian(X)

Description

nanmedian(X) the median treating NaNs as missing values.

For vectors, nanmedian(x) is the median of the non-NaN elements of x. For matrices, nanmedian(X) is a row vector containing the median of the non-NaN elements in each column of X.

Example

m = magic(4);
m([1 6 9 11]) = [NaN NaN NaN NaN]

m =

   NaN     2   NaN    13
     5   NaN    10     8
     9     7   NaN    12
     4    14    15     1

nmedian = nanmedian(m)

nmedian =

    5.0000    7.0000   12.5000   10.0000