[GRASS-user] problem creating point layer from CSV file

[John A Stevenson]

To set the column type in db.in.ogr for a csv file, you have to create 
another file (e.g. points_in.csvt) with the column types.

See:
g.manual db.in.ogr

or

http://www.gdal.org/ogr/drv_csv.html

Alternatively, load the csv file with v.in.ascii, which will give you a 
chance to describe the column types.

Later

John


Tim Michelsen wrote:
> Hello,
> I tried to create a point vector from a table with coordinates:
>
> db.in.ogr dsn=points_in.csv output=points key=myid
> v.in.db --overwrite table=points x=UTM_E y=UTM_N key=myid 
> output=points_vect
> => ERROR: x/y/z column must be integer or double
>
> Why do I get this error?
> How to I change the table column format for an imported ascii (CSV) 
> table in order to match integer or double?
>
> Thanks for your help.
>
> Kind regards,
> Timmie
>
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-- 


Dr John Stevenson
Postdoctoral Research Associate
School of Earth, Atmospheric and Environmental Sciences
Williamson Building (Room 2.42)
University of Manchester
Manchester M13 9PL, UK
tel. +44(0)161 306 6585; fax. +44(0)161 306 9361;
john.stevenson at manchester.ac.uk