[GRASS-user] Converting txt file into raster layer

[Daniel Victoria]

I'd go with v.in.ascii or r.in.xyz but, for both, you will need to
know the coordinates of each grid cell.

Another thing to look for is, if you have more than one observation
per time, you might have to separate the file and create one map (or
layer) for each time step. That's something easily done with NetCDF
and programs like GrADS....

Cheers
Daniel

On Wed, Dec 2, 2009 at 5:29 PM, Carbonari, Katie (IS)
<Katie.Carbonari at ngc.com> wrote:
>
> Good afternoon. A client of mine has given me a large text file (1.6Gig)
> that he wants visualized in GRASS. In the file, there are 7 columns (Time,
> Grid Cell Number, Elevation, Thickness, Topography height, U of water
> velocity, V of water velocity). I've never taken something in text form and
> put it into GRASS. Any suggestions on how to start? My first thought was to
> convert to netcdf import from there (since I have some experience working
> with netcdf in GRASS). Is there a more straight-forward way to do this? I
> have the projection information in a separate shapefile in order to
> geolocate.
>
> Any help would be greatly appreciated.
>
> Thanks!
> Katie
>
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