Hi devs,
I am trying to import a shapefile using v.in.ogr, filtering on date using datetime, e.g.,
v.in.ogr input=myshapefile.shp layer=myshapefile output=outputlayer where="datm_start >= datetime('2019-01-01')"
I am getting the message:
ERROR 1: Undefined function 'datetime' used.
ERROR: Error setting attribute filter 'datm_start >= datetime('2019-01-01')'
Does this mean it is not possible to use functions in v.in.ogr? Or am I doing somthing wrong?
Running grass gis 7.6, Linux.
Cheers,
Paulo
On Thu, Jun 27, 2019 at 9:27 PM Paulo van Breugel <p.vanbreugel@gmail.com> wrote:
Hi devs,
I am trying to import a shapefile using v.in.ogr, filtering on date
using datetime, e.g.,v.in.ogr input=myshapefile.shp layer=myshapefile output=outputlayer
where=“datm_start >= datetime(‘2019-01-01’)”I am getting the message:
ERROR 1: Undefined function ‘datetime’ used.
ERROR: Error setting attribute filter ‘datm_start >= datetime(‘2019-01-01’)’Does this mean it is not possible to use functions in v.in.ogr? Or am I
doing somthing wrong?
The OGR shapefile driver does not support this function. You need to import the shapefile into GRASS, using anything but the dbf driver as database driver (default is sqlite), then try to filter with v.extract where=“datm_start >= datetime(‘2019-01-01’)”
HTH,
Markus M
Running grass gis 7.6, Linux.
Cheers,
Paulo
grass-dev mailing list
grass-dev@lists.osgeo.org
https://lists.osgeo.org/mailman/listinfo/grass-dev
Op 27 juni 2019 23:05:17 schreef Markus Metz markus.metz.giswork@gmail.com:
On Thu, Jun 27, 2019 at 9:27 PM Paulo van Breugel <p.vanbreugel@gmail.com> wrote:
Hi devs,
I am trying to import a shapefile using v.in.ogr, filtering on date
using datetime, e.g.,v.in.ogr input=myshapefile.shp layer=myshapefile output=outputlayer
where=“datm_start >= datetime(‘2019-01-01’)”I am getting the message:
ERROR 1: Undefined function ‘datetime’ used.
ERROR: Error setting attribute filter ‘datm_start >= datetime(‘2019-01-01’)’Does this mean it is not possible to use functions in v.in.ogr? Or am I
doing somthing wrong?The OGR shapefile driver does not support this function. You need to import the shapefile into GRASS, using anything but the dbf driver as database driver (default is sqlite), then try to filter with v.extract where=“datm_start >= datetime(‘2019-01-01’)”
Ok, thanks, was hoping I could do a selection before to safe on the time ik takes to import. I’ll look for a way to filter before import using another tool.
HTH,
Markus M
Running grass gis 7.6, Linux.
Cheers,
Paulo
grass-dev mailing list
grass-dev@lists.osgeo.org
https://lists.osgeo.org/mailman/listinfo/grass-dev
Hi Paulo,
Maybe SQLITE dialect [1] in ogr2ogr could help?!
Could be worth a try to create a vector VRT [2] with ogr2ogr and import that.
No idea if it is faster but could be an option…
Cheers
Stefan
1: https://gdal.org/programs/ogr2ogr.html#cmdoption-ogr2ogr-dialect
2: https://gdal.org/drivers/vector/vrt.html
From: grass-dev grass-dev-bounces@lists.osgeo.org On Behalf Of Paulo van Breugel
Sent: torsdag 27. juni 2019 23:15
To: Markus Metz markus.metz.giswork@gmail.com
Cc: GRASS developers email list grass-dev@lists.osgeo.org
Subject: Re: [GRASS-dev] datetime function in v.in.ogr
Op 27 juni 2019 23:05:17 schreef Markus Metz <markus.metz.giswork@gmail.com>:
On Thu, Jun 27, 2019 at 9:27 PM Paulo van Breugel <p.vanbreugel@gmail.com> wrote:
Hi devs,
I am trying to import a shapefile using v.in.ogr, filtering on date
using datetime, e.g.,v.in.ogr input=myshapefile.shp layer=myshapefile output=outputlayer
where=“datm_start >= datetime(‘2019-01-01’)”I am getting the message:
ERROR 1: Undefined function ‘datetime’ used.
ERROR: Error setting attribute filter ‘datm_start >= datetime(‘2019-01-01’)’Does this mean it is not possible to use functions in v.in.ogr? Or am I
doing somthing wrong?The OGR shapefile driver does not support this function. You need to import the shapefile into GRASS, using anything but the dbf driver as database driver (default is sqlite), then try to filter with v.extract where=“datm_start >= datetime(‘2019-01-01’)”
Ok, thanks, was hoping I could do a selection before to safe on the time ik takes to import. I’ll look for a way to filter before import using another tool.
HTH,
Markus M
Running grass gis 7.6, Linux.
Cheers,
Paulo
grass-dev mailing list
grass-dev@lists.osgeo.org
https://lists.osgeo.org/mailman/listinfo/grass-dev