Addition of two maps

GRASS GRASS user
1

Here is the situation:

  I have two maps that have an overlapping area. I would like to
add the two maps together and use only one map for the overlapping

area. If I use r.mapcalc and preform an addition function it

will add that overlapping area.

How can I avoid this situation?

Thanks for any help.

Kym M. Lenkus
Davidson Laboratory

If I understand you correctly, the following should work:

  newmap = if(map_a,map_a,map_b)

assuming that map_a is the one you want to use in the overlapping area.

--
Malcolm D. Williamson - Research Assistant E-mail: malcolm@cast.uark.edu
Center for Advanced Spatial Technologies Telephone: (501) 575-6159
Ozark Rm. 12 Fax: (501) 575-3846
University of Arkansas
Fayetteville, AR 72701