[GRASS-dev] Strange behavour of t.register command

Roberto Marzocchi roberto.marzocchi at gmail.com
Thu May 10 03:51:23 PDT 2018

Thanks to all.

Effectively I create the dataset without specify the temporaltype because I
thought that the default temporaltype was absolute, but probably it is not

Anyway I understand the difference between absolute and relative time, but
I do not understand why use two different kind of input definition in the
t.register command. it seems not so user-friendly, but it is only my humble


2018-05-10 11:30 GMT+02:00 Veronica Andreo <veroandreo a gmail.com>:

> Ciao Roberto,
> AFAIU, the second command you used is the right one. I tested and no
> errors.
> In general, if you have absolute time (say gregorian calendar), you set
> the increment with a number and unit as you did, increment="120 minutes".
> If you have relative time in which each map represents 2 hours (result of
> simulations for example), you set the increment as increment=2 units=hours.
> IIUC, in your first command you are mixing two different time types by
> setting a start time as absolute time, a unitless increment and units
> separately... But others will know best :)https://grasswiki.osgeo.org/
> wiki/Temporal_data_processing/maps_registration
> Here's a wiki with examples: https://grasswiki.osgeo.org/
> wiki/Temporal_data_processing#Creating_a_STRDS_and_registering_maps, and
> one specific for registering maps: https://grasswiki.osgeo.org/
> wiki/Temporal_data_processing/maps_registration
> Cheers,
> Vero
> El jue., 10 may. 2018 a las 11:06, Roberto Marzocchi (<
> roberto.marzocchi a gmail.com>) escribió:
>> Dear lists,
>> we are testing the command t.register
>> t.register --o --q -i maps=(name of maps separated by comma)
>> input=time_dataset start='2011-11-03 02:00:00' increment='120'
>> unit='minutes'
>> it run without error but when running g.gui.animation or g.gui.tplot
>> using the time series dataset I have the following error: *Topology of
>> Space time dataset time_dataset a mapset is invalid*.
>> I tried the following command (reading the manual of t.register)
>>  t.register --o --q -i maps=(name of maps separated by comma) input=
>> time_dataset start='2011-11-03 02:00:00' increment='120 minutes'
>> and
>> - one PC I read the following error *ERRORE: invalid literal for int()
>> with base 10: '00+00'*
>> - on PC run correctly and I can run the gui commands witout any error
>> I have the same GRASS package installed on both the PC (7.4.0-1~xenial1)
>> R
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