[GRASS-user] temporal vector loading example

GRASS GRASS user
1

Hi Users,

I'm a virgin GRASS user, let's be honest.

I'm able to load some shp file with 2 datetime columns in it, in GRASS.

But now I try to register it as a Temporal dataset... but fail.
I packed it, and try to 'import' it
I tar'ed the location and tried to import it (grass was asking for a tar so...)

I see: "grass.exceptions.ScriptError: Unable to find init file" a lot...

Most docs/examples I see are about rasterdata.
Does anybody have some example or pointer to howto to 'easy load' a shape file with 2 datetime columns?

Thanks,

Richard Duivenvoorde

2

Hi Richard,

To create a vector time series, you need to think of each vector map as either a time instance or an interval. Here’s a reproducible example to run in North Carolina Location

Save the following as coords.txt

1664619|5103481
1664473|5095782
1664273|5101919
1663427|5105234
1663709|5102614

# create a vector of points
v.in.ascii input=coords.txt output=mymap1

# copy it over
for i in `seq 2 9` ; do
g.copy vector=mymap1,mymap${i}
done

# get the list of maps
g.list vect pattern=mymap* > list

# create the stds
t.create type=stvds temporaltype=absolute output=bla title="Bla bla" description="Bla bla bla"

# assign time stamps to maps
t.register -i type=vector input=bla file=list start="2018-09-01" increment="1 month"

# check info
[t.info](http://t.info) type=stvds input=
bla

# check list of maps with dates
t.vect.list bla

HTH,
Vero

El vie, 5 mar 2021 a las 16:50, Richard Duivenvoorde (<rdmailings@duif.net>) escribió:

Hi Users,

I’m a virgin GRASS user, let’s be honest.

I’m able to load some shp file with 2 datetime columns in it, in GRASS.

But now I try to register it as a Temporal dataset… but fail.
I packed it, and try to ‘import’ it
I tar’ed the location and tried to import it (grass was asking for a tar so…)

I see: “grass.exceptions.ScriptError: Unable to find init file” a lot…

Most docs/examples I see are about rasterdata.
Does anybody have some example or pointer to howto to ‘easy load’ a shape file with 2 datetime columns?

Thanks,

Richard Duivenvoorde

grass-user mailing list
grass-user@lists.osgeo.org
https://lists.osgeo.org/mailman/listinfo/grass-user