Converting ASCII data to raster format

Situation:

  1. Have 2 ASCII data files. x, y, and z coordinates.
  2. One file contains nearshore data and the other
      contains offshore data.
  
Goal:

  1. Combine data to make a raster map of combined data.

Have tried:

  1. s.in.ascii and s.surf.tps under no tension
      When nearshore and offshore is done seperately,
      the contours come out looking good.

  2. Tried combining and the offshore plays havic on
      the onshore.

Can you do the two maps separately, and use a mask layer based on
the shoreline to zero out the parts of each map that don't count,
then simply add the two maps together? I am assuming "nearshore"
means on "land", and that the discontinuity is the actual shoreline.

Tim.

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  Tim Martin * Reluctant to find he's
  Spatial Information Systems * stuck in the nineties
  University of Alberta * again.
  martin@ulysses.sis.ualberta.ca * - Moxy Fruvous
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