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Re: st: Loop to determine values of a variable based on values of variables
From
Nick Cox <[email protected]>
To
"[email protected]" <[email protected]>
Subject
Re: st: Loop to determine values of a variable based on values of variables
Date
Sat, 17 Aug 2013 17:42:17 +0100
See the FAQ
http://www.stata.com/support/faqs/data-management/neighbors-on-rectangular-grid/
Nick
[email protected]
On 17 August 2013 17:21, Rainer zu Fall
<[email protected]> wrote:
> The observations in my data are grid-years. A grid is a roughly
> quadratic spatial unit. I have a variable denoting whether or not a
> conflict is going on in a grid. However, I want to know whether
> conflicts are going on in nearby grids, too.
>
> I can identify nearby grids by their values on the variables "row" and
> "column"- any grid with values deviating from the values of my grid of
> interest no more than one unit on both variables are adjacent.
>
> My aim would be to create a dummy variable adjacentconflict=1 if
> conflict==1 in any of the adjacent grids.
> I reckon I have to write a loop to do this. I have tried around a bit,
> but seem to be at a loss.
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