R help - Oct 2011 - getting data associated with coordinates in a spatial data frame

If I know the specific coordinate in a spatial data frame, how can I access the
data at that coordinate?

My coordinates are labeled "x" and "y" in a data.frame
"e". The data is in column "leachate".
I want to say, basically:
e$leachate@coordinates(2,3<mailto:e$leachate@coordinates(2,3>).

Thanks, Daniel

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Hi,

On Wed, Oct 12, 2011 at 3:37 PM, Bailey, Daniel <bailed at spu.edu>
wrote:
> If I know the specific coordinate in a spatial data frame, how can I access
the data at that coordinate?
>
> My coordinates are labeled "x" and "y" in a data.frame
"e". The data is in column "leachate".
> I want to say, basically:
> e$leachate at coordinates(2,3<mailto:e$leachate at coordinates(2,3>).
That's kind of mangled, but what about:

e[e$x == my.x & e$y == my.y, "leachate"]

(Depending on the form of your coordinates, you may also have to
invoke FAQ 7.31.)

Sarah
> Thanks, Daniel
>
-- 
Sarah Goslee
http://www.functionaldiversity.org