This module "snaps" the end time of each registered map of a space time dataset to the start time of the map that is the temporal nearest neighbour in the future. Maps with equal time stamps are not modified and must be removed or modified to create a valid temporal topology. In case the last map in the space time dataset is a time instance, the granularity of the space time dataset will be used to create the time interval.
r.mapcalc expr="prec_1 = rand(0, 550)"
r.mapcalc expr="prec_2 = rand(0, 450)"
r.mapcalc expr="prec_3 = rand(0, 320)"
r.mapcalc expr="prec_4 = rand(0, 510)"
r.mapcalc expr="prec_5 = rand(0, 300)"
r.mapcalc expr="prec_6 = rand(0, 650)"
t.create type=strds temporaltype=absolute \
output=precipitation_daily \
title="Daily precipitation" \
description="Test dataset with daily precipitation"
t.register type=rast input=precipitation_daily \
maps=prec_1,prec_2,prec_3,prec_4,prec_5,prec_6 \
start=2012-01-01 increment="1 day"
t.info type=strds input=precipitation_daily
+-------------------- Space Time Raster Dataset -----------------------------+
| |
+-------------------- Basic information -------------------------------------+
| Id: ........................ precipitation_daily@soeren
| Name: ...................... precipitation_daily
| Mapset: .................... soeren
| Creator: ................... soeren
| Creation time: ............. 2013-04-20 14:39:07.136253
| Temporal type: ............. absolute
| Semantic type:.............. mean
+-------------------- Absolute time -----------------------------------------+
| Start time:................. 2012-01-01 00:00:00
| End time:................... 2012-01-06 00:00:00
| Granularity:................ 1 day
| Temporal type of maps:...... point
+-------------------- Spatial extent ----------------------------------------+
| North:...................... 80.0
| South:...................... 0.0
| East:.. .................... 120.0
| West:....................... 0.0
| Top:........................ 0.0
| Bottom:..................... 0.0
+-------------------- Metadata information ----------------------------------+
| Number of registered maps:.. 6
| Title:
| Daily precipitation
| Description:
| Test dataset with daily precipitation
| Commands of creation:
| - 2013-04-20 14:39:07 -
| t.create type="strds" temporaltype="absolute"
| output="precipitation_daily" title="Daily precipitation"
| description="Test dataset with daily precipitation"
| - 2013-04-20 14:39:07 -
| t.register type="rast" input="precipitation_daily"
| maps="prec_1,prec_2,prec_3,prec_4,prec_5,prec_6" start="2012-01-01"
| increment="1 day"
|
| North-South resolution min:. 10.0
| North-South resolution max:. 10.0
| East-west resolution min:... 10.0
| East-west resolution max:... 10.0
| Minimum value min:.......... 0.0
| Minimum value max:.......... 0.0
| Maximum value min:.......... 296.0
| Maximum value max:.......... 648.0
| Raster register table:...... precipitation_daily_soeren_raster_register
+----------------------------------------------------------------------------+
t.rast.list input=precipitation_daily
prec_1 soeren 2012-01-01 00:00:00 None
prec_2 soeren 2012-01-02 00:00:00 None
prec_3 soeren 2012-01-03 00:00:00 None
prec_4 soeren 2012-01-04 00:00:00 None
prec_5 soeren 2012-01-05 00:00:00 None
prec_6 soeren 2012-01-06 00:00:00 None
t.snap type=strds input=precipitation_daily
t.info type=strds input=precipitation_daily
+-------------------- Space Time Raster Dataset -----------------------------+
| |
+-------------------- Basic information -------------------------------------+
| Id: ........................ precipitation_daily@soeren
| Name: ...................... precipitation_daily
| Mapset: .................... soeren
| Creator: ................... soeren
| Creation time: ............. 2013-04-20 14:39:07.136253
| Temporal type: ............. absolute
| Semantic type:.............. mean
+-------------------- Absolute time -----------------------------------------+
| Start time:................. 2012-01-01 00:00:00
| End time:................... 2012-01-07 00:00:00
| Granularity:................ 1 day
| Temporal type of maps:...... interval
+-------------------- Spatial extent ----------------------------------------+
| North:...................... 80.0
| South:...................... 0.0
| East:.. .................... 120.0
| West:....................... 0.0
| Top:........................ 0.0
| Bottom:..................... 0.0
+-------------------- Metadata information ----------------------------------+
| Number of registered maps:.. 6
| Title:
| Daily precipitation
| Description:
| Test dataset with daily precipitation
| Commands of creation:
| - 2013-04-20 14:39:07 -
| t.create type="strds" temporaltype="absolute"
| output="precipitation_daily" title="Daily precipitation"
| description="Test dataset with daily precipitation"
| - 2013-04-20 14:39:07 -
| t.register type="rast" input="precipitation_daily"
| maps="prec_1,prec_2,prec_3,prec_4,prec_5,prec_6" start="2012-01-01"
| increment="1 day"
| - 2013-04-20 14:39:54 -
| t.snap type="strds" input="precipitation_daily"
|
| North-South resolution min:. 10.0
| North-South resolution max:. 10.0
| East-west resolution min:... 10.0
| East-west resolution max:... 10.0
| Minimum value min:.......... 0.0
| Minimum value max:.......... 0.0
| Maximum value min:.......... 296.0
| Maximum value max:.......... 648.0
| Raster register table:...... precipitation_daily_soeren_raster_register
+----------------------------------------------------------------------------+
t.rast.list input=precipitation_daily
prec_1 soeren 2012-01-01 00:00:00 2012-01-02 00:00:00
prec_2 soeren 2012-01-02 00:00:00 2012-01-03 00:00:00
prec_3 soeren 2012-01-03 00:00:00 2012-01-04 00:00:00
prec_4 soeren 2012-01-04 00:00:00 2012-01-05 00:00:00
prec_5 soeren 2012-01-05 00:00:00 2012-01-06 00:00:00
prec_6 soeren 2012-01-06 00:00:00 2012-01-07 00:00:00
Last changed: $Date$