[GRASS-dev] Temporal: t.register: problem parsing when time zone present

[Sören Gebbert]

Hi,
such a pity you were not in the TGIS workshop.
However, there can be gaps between time intervals.
Hence the end time of a time interval can be start time of a potential
successor or the start time of a gap.
But gaps are not stored explicitly, they are computed by topological analysis

I would suggest that you create an input text file that lists all maps
with time stamps that should be registered
If you call t.register for each single map the registration will be
very inefficient and slow
Example of an input file with gaps between map intervals:
mapA|2001-05-10|2001-05-11
mapB|2001-05-15|2001-05-16

Best regards
Soeren

2014-03-05 9:29 GMT+01:00 Yann Chemin <ychemin at gmail.com>:
> Thank you Soeren,
>
> If I want to register an irregular set of daily maps (missing days), will
> the end date need to be the next day (say 5 days after this image, 2 days
> after in the next image)?
>
> Cheers,
> Yann
>
>
> On 5 March 2014 12:14, Sören Gebbert <soerengebbert at googlemail.com> wrote:
>>
>> Hi Yann,
>> if you need support for time zones you have to use postgresql as
>> backend. Unfortunately sqlite does not support time zones. A work
>> around would be to ignore the time zone and use t.shift to temporally
>> shift the created STRDS by 5h and 30 min to UTC time after registering
>> the maps. I should notice this in the help page, i don't know why i
>> missed that ..???!!!
>>
>> The next thing is that TGRASS uses time intervals in which the end
>> time is not part of the time interval, but the start time of a
>> successor. That means that you do not need to know how many days in a
>> month are;  Interval of one day: start="2004-05-10" end="2004-05-11"
>>
>> Best regards
>> Soeren
>>
>> 2014-03-05 6:36 GMT+01:00 Yann Chemin <ychemin at gmail.com>:
>> > Hi,
>> >
>> > input line is:
>> > t.register input=ta maps=ta_2004131 start="2004-05-10 00:00:00 +0530"
>> > end="2004
>> > -05-10 23:59:59 +0530"
>> >
>> > temporal says:
>> >   File "/usr/lib/python2.7/sqlite3/dbapi2.py", line 69, in
>> > convert_timestamp
>> >     hours, minutes, seconds = map(int, timepart_full[0].split(":"))
>> > ValueError: invalid literal for int() with base 10: '00+05'
>> >
>> > Manual says following format accepted:
>> > start=string
>> > Valid start date and time of the first map. Format absolute time:
>> > "yyyy-mm-dd HH:MM:SS +HHMM", relative time is of type integer).
>> > end=string
>> > Valid end date and time of all map. Format absolute time: "yyyy-mm-dd
>> > HH:MM:SS +HHMM", relative time is of type integer).
>> >
>> > yann
>> > --
>> > ----
>
>
>
>
> --
> ----