R.stream.* modules - Revision history

Neteler: at least mention r.stream.extract

2016-10-03T20:06:52Z

at least mention r.stream.extract

← Older revision		Revision as of 20:06, 3 October 2016
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	File:Elevation_out_subbasin.png\|Elevation above the outlet of subbasin		File:Elevation_out_subbasin.png\|Elevation above the outlet of subbasin
	</gallery>		</gallery>

			== r.stream.extract ==

			Module {{cmd\|r.stream.extract}} extracts streams in both raster and vector format from a required input elevation map and optional input accumulation map.

	== r.stream.stats ==		== r.stream.stats ==

Neteler: Ugly and frightening {{toModify}} removed

2016-10-03T17:05:00Z

Ugly and frightening {{toModify}} removed

← Older revision		Revision as of 17:05, 3 October 2016
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	~~{{toModify}}~~
	== Overview ==		== Overview ==

⚠️Landa at 15:42, 24 April 2014

2014-04-24T15:42:10Z

← Older revision		Revision as of 15:42, 24 April 2014
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	Module {{AddonCmd\|r.stream.order}} may order stream network according four most popular ordering systems. Module can create both all four at once or every order separate. The accumulation mas is an option necessary if you want to determine main channels in Horton and Hack Ordering based on accumulation instead of channel length		Module {{AddonCmd\|r.stream.order}} may order stream network according four most popular ordering systems. Module can create both all four at once or every order separate. The accumulation mas is an option necessary if you want to determine main channels in Horton and Hack Ordering based on accumulation instead of channel length

	<pre">r.stream.order stream=streams dir=dirs strahler=strahler shreve=shreeve horton=horton hack=hack</pre>		<pre>r.stream.order stream=streams dir=dirs strahler=strahler shreve=shreeve horton=horton hack=hack</pre>

	<gallery widths=200 heights=200 perrow>		<gallery widths=200 heights=200 perrow>

⚠️Landa: /* Overview */

2014-04-24T09:45:49Z

Overview

← Older revision		Revision as of 09:45, 24 April 2014
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	Be sure you set the region for analysis before run it.		Be sure you set the region for analysis before run it.

	<pre">g.region rast=elev_ned_30_m</pre>		<pre>g.region rast=elev_ned_30_m</pre>

	For future analysis following map produced by r.watershed are required: ''streams'' with streams network, ''dirs'' with flow direction and ''accum'' with flow accumulation.		For future analysis following map produced by r.watershed are required: ''streams'' with streams network, ''dirs'' with flow direction and ''accum'' with flow accumulation.

⚠️Landa at 09:44, 24 April 2014

2014-04-24T09:44:36Z

← Older revision		Revision as of 09:44, 24 April 2014
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			{{toModify}}
	== Overview ==		== Overview ==

	Modules {{AddonCmd\|r.stream.order}}, {{AddonCmd\|r.stream.basins}}, {{AddonCmd\|r.stream.distance}}, and {{AddonCmd\|r.stream.stats}} are prepared to perform Hortonian analysis in GRASS GIS. Modules can work with outputs data of {{cmd\|r.watershed}} and {{AddonCmd\|r.stream.extract}} being prepared by Markus Metz.		Modules {{AddonCmd\|r.stream.order}}, {{AddonCmd\|r.stream.basins}}, {{AddonCmd\|r.stream.distance}}, and {{AddonCmd\|r.stream.stats}} are prepared to perform Hortonian analysis in GRASS GIS. Modules can work with outputs data of {{cmd\|r.watershed}} and {{AddonCmd\|r.stream.extract}} being prepared by Markus Metz.

	~~''NOTE: This page needs some updating.''~~

	The tutorial/presentation was prepared with North Carolina Dataset.		The tutorial/presentation was prepared with North Carolina Dataset.

⚠️Landa: Landa moved page R.stream.* to R.stream.* modules

2014-04-24T09:43:38Z

Landa moved page R.stream.* to R.stream.* modules

← Older revision		Revision as of 09:43, 24 April 2014
(No difference)

⚠️Landa at 09:43, 24 April 2014

2014-04-24T09:43:09Z

← Older revision		Revision as of 09:43, 24 April 2014
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	<gallery widths=300 heights=300 perrow>		<gallery widths=300 heights=300 perrow>
	File:Stream_distance.png\|[[Distance to the stream]]		File:Stream_distance.png\|Distance to the stream
	File:Stream_elevation.png\|[[Elevation above the stream]]		File:Stream_elevation.png\|Elevation above the stream
	</gallery>		</gallery>

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	<gallery widths=300 heights=300 perrow>		<gallery widths=300 heights=300 perrow>
	File:Distance_outlets.png\|[[Distance to the outlet]]		File:Distance_outlets.png\|Distance to the outlet
	File:Elevation_outlet.png\|[[Elevation above the outlet]]		File:Elevation_outlet.png\|Elevation above the outlet
	</gallery>		</gallery>

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	<gallery widths=300 heights=300 perrow>		<gallery widths=300 heights=300 perrow>
	File:Distance_outlets.png\|[[Distance to the outlet]]		File:Distance_outlets.png\|Distance to the outlet
	File:Elevation_outlet.png\|[[Elevation above the outlet]]		File:Elevation_outlet.png\|Elevation above the outlet
	</gallery>		</gallery>

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	<gallery widths=300 heights=300 perrow>		<gallery widths=300 heights=300 perrow>
	File:Dstance_outlet_sub.png\|[[Distance to the outlet of subbasin]]		File:Dstance_outlet_sub.png\|Distance to the outlet of subbasin
	File:Elevation_out_subbasin.png\|[[Elevation above the outlet of subbasin]]		File:Elevation_out_subbasin.png\|Elevation above the outlet of subbasin
	</gallery>		</gallery>

⚠️Landa at 09:41, 24 April 2014

2014-04-24T09:41:55Z

← Older revision		Revision as of 09:41, 24 April 2014
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	<gallery widths=200 heights=200 perrow>		<gallery widths=200 heights=200 perrow>
	File:Ord_strahler.png\|[[Strahler Stream Order]]		File:Ord_strahler.png\|Strahler Stream Order
	File:Ord_horton.png\|[[Horton Stream Order]]		File:Ord_horton.png\|Horton Stream Order
	File:Ord_shreeve.png\|[[Shreve Stream Magnitude]]		File:Ord_shreeve.png\|Shreve Stream Magnitude
	File:Ord_hack.png\|[[Main (Hack) Stream Order]]		File:Ord_hack.png\|Main (Hack) Stream Order
	</gallery>		</gallery>
	To obtain Scheidegger's stream order is just enough multiply Shreve stream magnitude x2.		To obtain Scheidegger's stream order is just enough multiply Shreve stream magnitude x2.

Neteler: examples hopefully corrected/clarified

2014-01-02T22:07:16Z

examples hopefully corrected/clarified

← Older revision		Revision as of 22:07, 2 January 2014
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	* = NULL' > tmp1		* = NULL' > tmp1

	r.reclass input=streams output=sel_streams_1 <tmp1		r.reclass input=streams output=sel_streams_1 rules=tmp1
	r.stream.basins dir=dirs stream=~~streams~~ basins=bas_basin_1		r.stream.basins dir=dirs stream=sel_streams_1 basins=bas_basin_1
	</pre>		</pre>

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	252 = 252		252 = 252
	188 = 188		188 = 188
	* = NULL' >~~tmp~~		* = NULL' >tmp3

	r.reclass input=streams output=~~sel_streams_1 <tmp1~~		r.reclass input=streams output=sel_streams_3 rules=tmp3
	r.stream.basins dir=dirs stream=~~streams~~ basins=bas_basin_3		r.stream.basins dir=dirs stream=sel_streams_3 basins=bas_basin_3
	</pre>		</pre>
	[[File:basin_3.png\|350px\|thumb\|center\|Three basins]]		[[File:basin_3.png\|350px\|thumb\|center\|Three basins]]
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	<pre>		<pre>
	~~echo '~~sel_all_streams_42 =		r.mapcalc "sel_all_streams_42 = if(bas_basin_1,streams,null())"
	if(bas_basin_1,streams,null())~~'\|r.mapcalc~~
	r.stream.basins dir=dirs stream=sel_all_streams_42 basins=bas_elem_42		r.stream.basins dir=dirs stream=sel_all_streams_42 basins=bas_elem_42
	</pre>		</pre>
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	<pre>		<pre>
	echo '2 = 2		echo '2 = 2
	* = NULL' > ~~tmp~~		* = NULL' > tmp2
	r.reclass input=ord_strahler output=sel_strahler_2 ~~< tmp~~
	r.stream.basins -c dir=dirs		r.reclass input=ord_strahler output=sel_strahler_2 rules=tmp2
	stream=sel_strahler_2 basins=bas_basin_strahler_2		r.stream.basins -c dir=dirs stream=sel_strahler_2 basins=bas_basin_strahler_2
	</pre>		</pre>

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	<pre>		<pre>
	~~echo '~~sel_strahler_cat_2		r.mapcalc "sel_strahler_cat_2 = if(ord_strahler==2,streams,null())"
	=if(ord_strahler==2,streams,null())~~'\|r.mapcalc~~		r.stream.basins -l dir=dirs stream=sel_strahler_cat_2 basins=bas_basin_strahler_2
	r.stream.basins -l dir=dirs stream=~~sel_strahler_2~~ basins=bas_basin_strahler_2
	</pre>		</pre>

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	[[File:Bas_contrib_strahler.png\|350px\|thumb\|center\|Areas of contribution to stream of particular order]]		[[File:Bas_contrib_strahler.png\|350px\|thumb\|center\|Areas of contribution to stream of particular order]]

	Basin can be terminated according user's input. For now input must be in raster format (vector format is planned in the feature). What is important input can be anything: lines, polygons or points. But it shall overlapping with streams. It is very useful in situation, when we cannot determine the real route and identifier of streams but we can determine its most probable route (for example in hydrological simulation) we can mark with any area in place where link is most probable		Basin can be terminated according user's input. For now input must be in raster format (vector format is planned in the feature). What is important input can be anything: lines, polygons or points. But it shall overlapping with streams. It is very useful in situation, when we cannot determine the real route and identifier of streams but we can determine its most probable route (for example in hydrological simulation) we can mark with any area in place where link is most probable.
	[[File:basin_points.png\|350px\|thumb\|center\|Basin outlets of custom shape]]		[[File:basin_points.png\|350px\|thumb\|center\|Basin outlets of custom shape]]

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	v.extract -d input=lakes@PERMANENT output=lake8056 type=area layer=1 'where=FULL_HYDRO = 8056' new=-1		v.extract -d input=lakes@PERMANENT output=lake8056 type=area layer=1 'where=FULL_HYDRO = 8056' new=-1
	v.to.rast input=lake8056@horton output=lake8056 use=val type=area layer=1 value=1		v.to.rast input=lake8056@horton output=lake8056 use=val type=area layer=1 value=1
	~~echo '~~sel_streams_lake=if(lake8056,streams,null())~~'\|r.mapcalc~~		r.mapcalc "sel_streams_lake = if(lake8056,streams,null())"
	r.stream.basins dir=dirs stream=sel_streams_lake basins=bas_basin_lake		r.stream.basins dir=dirs stream=sel_streams_lake basins=bas_basin_lake
	</pre>		</pre>
	<gallery widths=300 heights=300 perrow>		<gallery widths=300 heights=300 perrow>
	File:full_hydo_8056.png\|[[Lake]]		File:full_hydo_8056.png\|Lake
	File:bas_lake_dengerous.png\|[[Areas of contribution to lake]]		File:bas_lake_dengerous.png\|Areas of contribution to lake
	</gallery>		</gallery>

Neteler: url update

2013-01-26T16:03:39Z

url update

← Older revision		Revision as of 16:03, 26 January 2013
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	The tutorial/presentation was prepared with North Carolina Dataset.		The tutorial/presentation was prepared with North Carolina Dataset.

	[http://grass.osgeo.org/download/data~~.php~~ http://grass.osgeo.org/download/data~~.php~~]		[http://grass.osgeo.org/download/sample-data/ http://grass.osgeo.org/download/sample-data/]

	As a base map 'elev_ned_30_m' was used. Regions settings for analysis:		As a base map 'elev_ned_30_m' was used. Regions settings for analysis:
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	For future analysis following map produced by r.watershed are required: ''streams'' with streams network, ''dirs'' with flow direction and ''accum'' with flow accumulation.		For future analysis following map produced by r.watershed are required: ''streams'' with streams network, ''dirs'' with flow direction and ''accum'' with flow accumulation.


	== r.stream.order ==		== r.stream.order ==