Re: GRASS-way to delete points from a map and attribute table

IMHO it would be helpful to add a flag to v.edit to also delete the
database entries when tool=delete.

In general use, when I delete a feature, I don't expect to leave
orphaned entries in the attribute table.

On 11/09/2017 12:25 PM, Johannes
Radinger wrote:

Indeed, finally I also used a combination of v.edit
to remove the point from the map and db.execute ("DELETE FROM
my_point_map WHERE cat IN (1,2,3)") to delete the entries from
the attribute table.

/Johannes

On Thu, Nov 9, 2017 at 10:27 AM, Stefan
Blumentrath <[email protected] >
wrote:

So, removing records from the attribute
table would be a job for db.execute of db.select I
guess…

From: Johannes Radinger [mailto:[email protected] ]

Sent: torsdag 9. november 2017 10.17

To: Stefan Blumentrath <[email protected] >

Cc: GRASS user list <[email protected] >

Subject: Re: [GRASS-user] GRASS-way to delete
points from a map and attribute table

Dear Stefan,

thanks for the tip, but as
said I tried already v.edit but somehow this
tools does not modify the attribute table (or
do I miss something here?)

/Johannes

On Thu, Nov 9, 2017 at
10:10 AM, Stefan Blumentrath <[email protected] >
wrote:

Did you try v.edit:

https://grass.osgeo.org/grass72/manuals/v.edit.html

Cheers

Stefan

From: grass-user [mailto:[email protected] ]
On Behalf Of Johannes Radinger

Sent: torsdag 9. november 2017
10.04

To: GRASS user list <[email protected] >

Subject: [GRASS-user] GRASS-way
to delete points from a map and
attribute table

Hi,

what would be
the most GRASS-like way to
delete several points from a
points vector map.

I know the
specific cats of the points I
would like to delete (10 of
200000) and I want to delete the
points from the map and, of
course, also from the
corresponding attribute table. I
already tried v.edit but here
the points are not deleted from
the attribute table. I could
also use v.extract with the
reverse flag, however this
requires to define a new output
map (which I would like to avoid
if possible). Any straight
forward way in GRASS?

/Johannes

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Micha Silver
Ben Gurion Univ.
Sde Boker, Remote Sensing Lab
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