[GRASS-user] GRASS GIS 7.8.5 v.distance

GRASS GRASS user
1

Hi,

I am trying to use the v.distance function in GRASS GIS 7.8.5, however, it won’t accept ‘from’ as a parameter as it’s a python keyword (I think). When I use ‘FROM’ I get an error saying:

WARNING: Illegal filename <FROM=buildings>. Character <=> not allowed.
ERROR: Vector map <FROM=buildings> not found

This is the code I’m trying to run:

gs.run_command('v.distance',
    FROM = 'buildings',
    to = 'mappedStreams',
    upload = 'to_attr',
    column = 'stream_id',
    to_column = 'OBJECTID',
    output = 'distanceLines',
    overwrite = True)

Any help would be greatly appreciated.

Thanks!

2

Hi Kelsey,

Try: "from_"

So,
gs.run_command('v.distance',
    from_ = 'buildings',
    to = 'mappedStreams',

The problem is indeed that from is a keyword...

Cheers
Stefan

-----Original Message-----
From: grass-user <grass-user-bounces@lists.osgeo.org> On Behalf Of Kelsey Wong
Sent: torsdag 13. mai 2021 21:32
To: grass-user@lists.osgeo.org
Subject: [GRASS-user] GRASS GIS 7.8.5 v.distance

Hi,

I am trying to use the v.distance function in GRASS GIS 7.8.5, however, it won't accept 'from' as a parameter as it's a python keyword (I think). When I use 'FROM' I get an error saying:

WARNING: Illegal filename <FROM=buildings>. Character <=> not allowed.
ERROR: Vector map <FROM=buildings> not found

This is the code I'm trying to run:

gs.run_command('v.distance',
    FROM = 'buildings',
    to = 'mappedStreams',
    upload = 'to_attr',
    column = 'stream_id',
    to_column = 'OBJECTID',
    output = 'distanceLines',
    overwrite = True)

Any help would be greatly appreciated.

Thanks!
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3

Hi Stefan,

Thank you so much - that solved my entire problem!

Cheers,

Kelsey

On May 13, 2021, at 1:04 PM, Stefan Blumentrath <Stefan.Blumentrath@nina.no> wrote:

Hi Kelsey,

Try: “from_”

So,
gs.run_command(‘v.distance’,
from_ = ‘buildings’,
to = ‘mappedStreams’,

The problem is indeed that from is a keyword…

Cheers
Stefan

-----Original Message-----
From: grass-user <grass-user-bounces@lists.osgeo.org> On Behalf Of Kelsey Wong
Sent: torsdag 13. mai 2021 21:32
To: grass-user@lists.osgeo.org
Subject: [GRASS-user] GRASS GIS 7.8.5 v.distance

Hi,

I am trying to use the v.distance function in GRASS GIS 7.8.5, however, it won’t accept ‘from’ as a parameter as it’s a python keyword (I think). When I use ‘FROM’ I get an error saying:

WARNING: Illegal filename <FROM=buildings>. Character <=> not allowed.
ERROR: Vector map <FROM=buildings> not found

This is the code I’m trying to run:

gs.run_command(‘v.distance’,
FROM = ‘buildings’,
to = ‘mappedStreams’,
upload = ‘to_attr’,
column = ‘stream_id’,
to_column = ‘OBJECTID’,
output = ‘distanceLines’,
overwrite = True)

Any help would be greatly appreciated.

Thanks!

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