Re: Extracting segents of data from array

[Ben Abbott]

On Jan 3, 2011, at 1:13 PM, lciotti wrote:

> I have a large array that I want to extract specific rows from.
> 
> Specifically I want to extract data from every 9th row as well as the one
> before and the one after starting at the 100th row.  What is the quickest
> way to do this?
> 
> Thanks

If your original array is "a" ...

        n = 100:9:rows(a);
        n = union (union (n, n-1), n+1);
        b = a(n,:);

... "b" contains the extracted data.

Ben