Querying a layer by location

[Rick Thompson]

Lesley-Ann,
  You can check r.what to do this.

> I am working with an AVHRR image and would like to find what the DN value
> of a particular location that I already know the coordinates for, without
> having to do d.what.rast and click around the general area around the
> region. Is there a command that I could use to input the coordinates I
> want, and have GRASS search the image and give me what the value is at
> that particular location?
------------------------------------------------------------------------
Rick Thompson-   Research Assistant           E-mail: rick at cast.uark.edu
Center for Advanced Spatial Technologies      Telephone: (501) 575-5736
Ozark Hall Rm. 12                             Fax: 575-3846 
University of Arkansas              
Fayetteville, AR 72701