[GRASS-user] delete, drop rows in table

[Hamish]

Stefanie Obmann wrote:
> 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). 

try using v.extract to do the WHERE clause first.


Hamish