How to ignore certain columns in a matrix when calculating a mean across all columns in a matrix?

17 visualizaciones (últimos 30 días)
Hi all,
I have a 100x16 double matrix (attached) which when plotted over one figure looks like this.
Now, I want to calculate the mean across all columns in the matrix so that the output is a 100x 1 double. I can do this by following
load 'data'
hold on
% get mean
S_or_z_meancycle = mean(S_or_z, 2);
However, when calcuating the mean, I would like ignore the columns indicated in red.
The rule that I would like to apply is that the columns which range (max-min) exceeds 200 should be ignored when calcuating the mean accross all columns.
Can you help please?

Respuesta aceptada

Davide Masiello
Davide Masiello el 16 de Mzo. de 2022
Editada: Davide Masiello el 16 de Mzo. de 2022
See if this works
new_S_or_z = S_or_z(:,(max(S_or_z,[],1)-min(S_or_z,[],1)) < 200);
Unrecognized function or variable 'S_or_z'.
  2 comentarios
Tomaszzz el 16 de Mzo. de 2022
Thanks Davide,
Instead of :
Should it be?:
Otherwise I get:
Dimension argument must be a positive integer scalar, a vector of unique positive integers, or 'all'.
Davide Masiello
Davide Masiello el 16 de Mzo. de 2022
Yes, you're right! I got the syntax for "min" and "max" mixed up with the one for "mean", sorry about that.

Iniciar sesión para comentar.

Más respuestas (0)


Más información sobre Creating and Concatenating Matrices en Help Center y File Exchange.

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by