Note: This document is for an older version of GRASS GIS that will be discontinued soon. You should upgrade, and read the current manual page.
Existing space time datasets located in the current mapset can be specified as output as well. The maps from the input space time datasets will be added to the output.
Maps from the input space time datasets will be registered only once in the output space time dataset, hence the same maps can be registered in different input space time datasets.
r.mapcalc expression="map1 = rand(0, 10)" -s r.mapcalc expression="map2 = rand(10, 20)" -s t.create type=strds temporaltype=absolute \ output=precipitation_daily_1 \ title="Daily precipitation" \ description="Test dataset with daily precipitation" t.register -i type=raster input=precipitation_daily_1 \ maps=map1,map2 start=2012-08-20 increment="1 days" t.info precipitation_daily_1 +-------------------- Space Time Raster Dataset -----------------------------+ | | +-------------------- Basic information -------------------------------------+ | Id: ........................ precipitation_daily_1@soeren | Name: ...................... precipitation_daily_1 | Mapset: .................... soeren | Creator: ................... soeren | Temporal type: ............. absolute | Creation time: ............. 2014-11-23 15:26:57.395355 | Modification time:.......... 2014-11-23 15:26:57.860513 | Semantic type:.............. mean +-------------------- Absolute time -----------------------------------------+ | Start time:................. 2012-08-20 00:00:00 | End time:................... 2012-08-22 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 ----------------------------------+ | Raster register table:...... raster_map_register_6e6efe25ee9b40e39eb31421d737439b | 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:.......... 10.0 | Maximum value min:.......... 9.0 | Maximum value max:.......... 19.0 | Aggregation type:........... None | Number of registered maps:.. 2 | | Title: | Daily precipitation | Description: | Test dataset with daily precipitation | Command history: | # 2014-11-23 15:26:57 | t.create type="strds" temporaltype="absolute" | output="precipitation_daily_1" title="Daily precipitation" | description="Test dataset with daily precipitation" | # 2014-11-23 15:26:57 | t.register -i type="rast" | input="precipitation_daily_1" maps="map1,map2" start="2012-08-20" | increment="1 days" | +----------------------------------------------------------------------------+ r.mapcalc expression="map3 = rand(20, 30)" -s r.mapcalc expression="map4 = rand(30, 40)" -s t.create type=strds temporaltype=absolute \ output=precipitation_daily_2 \ title="Daily precipitation" \ description="Test dataset with daily precipitation" t.register -i type=raster input=precipitation_daily_2 \ maps=map3,map4 start=2012-08-22 increment="1 days" t.info precipitation_daily_2 +-------------------- Space Time Raster Dataset -----------------------------+ | | +-------------------- Basic information -------------------------------------+ | Id: ........................ precipitation_daily_2@soeren | Name: ...................... precipitation_daily_2 | Mapset: .................... soeren | Creator: ................... soeren | Temporal type: ............. absolute | Creation time: ............. 2014-11-23 15:27:20.165074 | Modification time:.......... 2014-11-23 15:27:20.613543 | Semantic type:.............. mean +-------------------- Absolute time -----------------------------------------+ | Start time:................. 2012-08-22 00:00:00 | End time:................... 2012-08-24 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 ----------------------------------+ | Raster register table:...... raster_map_register_04eaede279b2476a80c2683254232f84 | 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:.......... 20.0 | Minimum value max:.......... 30.0 | Maximum value min:.......... 29.0 | Maximum value max:.......... 39.0 | Aggregation type:........... None | Number of registered maps:.. 2 | | Title: | Daily precipitation | Description: | Test dataset with daily precipitation | Command history: | # 2014-11-23 15:27:20 | t.create type="strds" temporaltype="absolute" | output="precipitation_daily_2" title="Daily precipitation" | description="Test dataset with daily precipitation" | # 2014-11-23 15:27:20 | t.register -i type="rast" | input="precipitation_daily_2" maps="map3,map4" start="2012-08-22" | increment="1 days" | +----------------------------------------------------------------------------+ t.merge input=precipitation_daily_1,precipitation_daily_2 \ output=precipitation_daily_3 t.info precipitation_daily_3 +-------------------- Space Time Raster Dataset -----------------------------+ | | +-------------------- Basic information -------------------------------------+ | Id: ........................ precipitation_daily_3@soeren | Name: ...................... precipitation_daily_3 | Mapset: .................... soeren | Creator: ................... soeren | Temporal type: ............. absolute | Creation time: ............. 2014-11-23 15:27:44.069272 | Modification time:.......... 2014-11-23 15:27:44.088930 | Semantic type:.............. mean +-------------------- Absolute time -----------------------------------------+ | Start time:................. 2012-08-20 00:00:00 | End time:................... 2012-08-24 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 ----------------------------------+ | Raster register table:...... raster_map_register_33715c8c849a43fbb9bce02e1f28ff5a | 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:.......... 30.0 | Maximum value min:.......... 9.0 | Maximum value max:.......... 39.0 | Aggregation type:........... None | Number of registered maps:.. 4 | | Title: | Merged space time dataset | Description: | Merged space time dataset | Command history: | # 2014-11-23 15:27:44 | t.merge | input="precipitation_daily_1,precipitation_daily_2" | output="precipitation_daily_3" | +----------------------------------------------------------------------------+
Available at: t.merge source code (history)
Latest change: Mon Nov 18 20:15:32 2019 in commit: 1a1d107e4f6e1b846f9841c2c6fabf015c5f720d
Note: This document is for an older version of GRASS GIS that will be discontinued soon. You should upgrade, and read the current manual page.
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