standard deviation of a 3d matrix

Hello!

I have a 3-D matrix (test = rand[3,3,4]) and I want to get the standard deviation of each cell going through the 3rd dimension. Sean de wrote before that to get the mean through the third dimension, I can simply plug in:

grid = mean(test,3);

Simply changing 'mean' to 'std' does not do the trick and other attempts I've made didn't go very far. Any suggestions?

Thanks! Donald

[Sean de Wolski]

Don't overwrite the useful function 'grid'.

Answer 1

[Oleg Komarov]

std(test,[],3)

The second argument refers to wheter you want the std to be corrected for the degrees of freedom or not. For more info:

doc std