[GRASSLIST:2058] Re: mapcalc for sites?

[Hamish]

> Is there a way within GRASS to do calculations on sites?  I have some 
> depth soundings that imports into float attributes to my sites and
> need to convert them to elevations (and to meters) before I run one of
> the surf commands.  I would rather not go outside of GRASS to do it
> (too much import/export hassle), but I have the tools if necessary.

Probably best to do it externally.
 
 s.out.ascii sites_file -ad fs=, > site_data.dat


Then

if the number of soundings is small:
load into a spreadsheet and make the changes you need.

if the number of soundings is large:
load into something like Octave or Matlab & do your thing.


Save in a similar CSV format & re-import with s.in.ascii. Mind the
spreadsheet hasn't rounded your data on a whim as some of them are want
to do.


Within GRASS, you can only do stats on the site data, not actually
change them, AFAIK.


good luck,
Hamish