[GRASS-user] azimuth of lines with v.to.db?

[Moritz Lennert]

On 18/10/07 13:17, Carlos "Guâno" Grohmann wrote:
> OK, I am trying to get these thing working with db.execute.
> 
> although these work:
>> echo "UPDATE Lineam_isobase SET dx=end_x-start_x" | db.execute
>> echo "UPDATE Lineam_isobase SET dy=end_y-start_y" | db.execute
> 
> this doesn't:
> 
>> echo "UPDATE Lineam_isobase SET ang_rad=atan2(dx,dy)" | db.execute
> DBMI-DBF driver error:
> SQL parser error:
> in statement:
> UPDATE Lineam_isobase SET ang_rad=atan2(dx,dy)
> 
> Error in db_execute_immediate()
> 
> ERROR: Error while executing: 'UPDATE Lineam_isobase SET
>        ang_rad=atan2(dx,dy)
>        '
> 
> thoughts?

Which database backend are you using ?

Try running after setting 'g.gisenv set=DEBUG=3'.

Moritz