User`s guide

Median

5-307

5Median

Purpose Find the median value of an input.

Library Statistics

Description The Median block computes the median value of each column in an M-by-N

input matrix.

y = median(u) % Equivalent MATLAB code

For convenience, length-M 1-D vector inputs and sample-based length-M row

vector inputs are both treated as M-by-1 column vectors.

The output at each sample time,

y, is a sample-based 1-by-N vector containing

the median value for each column in

When M is odd, the block sorts the column elements by value, and outputs the

central row of the sorted matrix.

s = sort(u);

y = s((M+1)/2,:)

When M is even, the block sorts the column elements by value, and outputs the

average of the two central rows in the sorted matrix.

s = sort(u);

y = mean([s(M/2,:);s(M/2+1,:)])

Complex inputs are sorted by magnitude, and the real and imaginary

components are averaged independently (for even M).

Dialog Box

Supported

Data Types

Double-precision floating point