There should be a command called 'diag', have a look at the docs for this 
function.
HTH,
Christian


-- 
Christian Soeller PhD - Dept. of Physiology - Univ. of Auckland
Sent with Sparrow (http://www.sparrowmailapp.com/?sig)


On Saturday, 26 May 2012 at 6:39 PM, Gurunath Katagi wrote:

> Dear all,
> I am new to using pdl ...
> 
> i have some 30000 matrix from which i want to extract the diagonal elements 
> from each of them and get the average and standard deviation of each of the 
> diagonal elements among 30000 matrix.
> 
> however, i am able to able to this in MATLAB, but its very slow ...
> 
> Can anybody help to write this is program using pdl and is there anyway  that 
> i can process it fast using pdl ...
> 
> my program goes like this :
> read the matrix files
> extract the diagnol elements from each of the them
> and find the avg. and std. 
> 
> I tried it, but i am facing problem with respect to extracting the diagonal 
> elements... 
> 
> 
> Thank you
> Gurunath
> 
> 
> 
> 
> 
> 
> 
> 
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> 
> 


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