Mean over a multidimensionnal Cell

Hi all,

I got a cell whose form is as follow :

data{number_of_file,1}(number_of_line,number_of_columns)

I'd like to average over, for instance, the first line of the first column over all files, then the second line of the first column over all files, etc.

What would you suggest ? I've tried :

    for j=1:length(data{1,1}) % loop over all lines
        meanP=nanmean(data{:,1}(j,1)); % loop over all files for the j line
    end

But I end up with this message : Bad cell reference operation.

Thanks

Florian

Answer 1

[A Jenkins]

You want the average of per-line of all the files? If all of the data are the same number of rows, then you can concatenate them together and average the rows in one line:

data{1,1}=rand(3,3);
data{2,1}=rand(3,3);
meanP=nanmean(horzcat(data{:,1}),2); %by row

Or by column:

meanP=nanmean(vertcat(data{:,1}),1); %by column

[Florian]

Thank you, I didn't know the vertcat function, newbie ;) Florian