Create a matrix of averages of a row of a previous matrix 1

[dylansylvester]

I have a 18x3 matrix. The three columns represent three separate trials.

What I am trying to do is take the mean of the first row of each column, and put that value into a new matrix, then do that for each subsequent row. So ultimately I would end up with an 18x1 matrix with each value equal to the average of the corresponding row in the previous matrix.

 

[IRstuff]

So, what exactly are you having trouble with? You have indices for the input and output matrices:

i := 0;17
out[i := in[i,0 + in[i,1 + in[i,2

TTFN

FAQ731-376

 

[jghrist]

Try this.

 

[philipoakley]

The other way is to first transpose the matrix [ctrl+!] then use the colum extract [ctrl+^] and the mean() to make the average more general.

Philip

 

[dylansylvester]

thanks for that file jghrist! That did exactly it! Thanks for the quick response to all of you.