Dear users,
maybe an easy question to you:
I have a table of 7 columns and over 200 rows. (including x,y,z coord)
I want to exclude all NULL values (999.99) from my temperature column to do the v.surf.idw command.
I don’t know where to set a WHERE clause that the calculation just takes the real values (except 999.99).
Is there a way? I’ve read that f.e. the v.surf.rst includes a WHERE clause which would be perfect also for v.surf.idw.
The other possibility I see would be to delete or drop all rows with 999.99 in my value column. But I don’t know how to do it.
It would be very nice and helpful if someone will answer…
Thanks,
Stef