TIME SERIES SUPPORT FOR GRASS RASTER MAPS

REQUIREMENTS
You need:
 - >= grass63
 - sqlite3
 - a valid GRASS location
and the will to read sql and bash code if an error occures :)


USAGE
Be sure you are in a GRASS location!
The sqlite3 database will be created in the LOCATION/MAPSET/rast4d_db/ directory.
Use a graphical frontend to explore the database structure or read the 
code in the sql directory (e.g., sqlitebrowser or the Firefox SQLite addon).

* r.rast4d.init
Start r.rast4d.init to create the database,
- if the database already exists, nothing will be performed
- if you want to create a new database just remove the one in 
  the MAPSET/rast4d_db/ directory and run r.rast4d.init again

* tg.update
Use tg.update to register/update your raster maps in the sqlite table.
You can run it again to update already registered maps.

* tg.list
Use tg.list to show the registered maps, performe sql where statements on the view
and use the order option to order your data

* tg.remove
Remove the raster map entries from the database
The maps are not removed from grass!

###########################################

How to upload many raster maps?

The maps need to have a valid time stamp (r.timestamp).
Then (we assume a wildcard for raster names):

 for i in `g.mlist type=rast pat="rastname*"` ; do
   tg.update $i [vtime_end=+30 minutes]
 done

###########################################
Sören Gebbert 	
to neteler at itc it
Apr 5 2007

Fertig,
ich habe den Prototypen hoffentlich so modifiziert dass er mit Punkten im Namen umgehen kann.
Außerdem werden die Raster timestamps (erzeugt mit r.timestamp) ausgewertet
und die vtime_start mit dem ersten auftretenden timestamp gesetzt.

Der erste timestamp sollte vollständig sein, sonst funzt es nicht.
Es ist ein ziemlicher Hack weil ich in Eile bin. :/

Beispiel mit 4 registrierten Maps:

GRASS 6.3.cvs > tg.list rast select=name,vtime_start
select name,vtime_start from raster_view where ctime > DATETIME('1950-01-01 10:00:00') order by name
test.1.1|1999-06-08 13:10:20
test.1.2|1999-06-09 13:10:20
test.1.3|2000-01-14 13:10:20
test.1.4|2000-01-24 13:10:20

GRASS 6.3.cvs > r.timestamp test.1.1
8 Jun 1999 13:10:20

GRASS 6.3.cvs > r.timestamp test.1.2
9 Jun 1999 13:10:20

GRASS 6.3.cvs > r.timestamp test.1.3
14 Jan 2000 13:10:20

GRASS 6.3.cvs > r.timestamp test.1.4
24 Jan 2000 13:10:20