[GRASS-SVN] r72932 - grass-addons/grass7/raster/r.accumulate

[svn_grass at osgeo.org]

Author: hcho
Date: 2018-06-29 08:23:06 -0700 (Fri, 29 Jun 2018)
New Revision: 72932

Modified:
   grass-addons/grass7/raster/r.accumulate/r.accumulate.html
   grass-addons/grass7/raster/r.accumulate/r_accumulate_nc_lfp_example_multiple.png
Log:
r.accumulate: Update examples with complete scripts

Modified: grass-addons/grass7/raster/r.accumulate/r.accumulate.html
===================================================================
--- grass-addons/grass7/raster/r.accumulate/r.accumulate.html	2018-06-29 06:17:46 UTC (rev 72931)
+++ grass-addons/grass7/raster/r.accumulate/r.accumulate.html	2018-06-29 15:23:06 UTC (rev 72932)
@@ -109,6 +109,13 @@
 
 <p>Calculate flow accumulation and delineate stream networks at once:
 <div class="code"><pre>
+# set computational region
+g.region raster=elevation -p
+
+# calculate positive flow accumulation and drainage directions using r.watershed
+# for comparison, use -s (SFD)
+r.watershed elevation=elevation accumulation=flow_accum drainage=drain_directions -s -a
+
 # use r.accumulate to create flow_accum_new and streams_new at once
 r.accumulate direction=drain_directions accumulation=flow_accum_new threshold=50000 stream=streams_new
 
@@ -139,6 +146,12 @@
 
 <p>Create the longest flow path for one outlet:
 <div class="code"><pre>
+# set computational region
+g.region raster=elevation -p
+
+# calculate drainage directions using r.watershed
+r.watershed elevation=elevation drainage=drain_directions -s -a
+
 # delineate watershed
 r.water.outlet input=drain_directions output=basin coordinates=642455,222614
 
@@ -154,6 +167,12 @@
 
 <p>There are different ways to calculate multiple longest flow paths in one run:
 <div class="code"><pre>
+# set computational region
+g.region raster=elevation -p
+
+# calculate drainage directions using r.watershed
+r.watershed elevation=elevation drainage=drain_directions -s -a
+
 # calculate longest flow paths at two outlets
 r.accumulate direction=drain_directions lfp=lfp coordinates=642455,222614,642306,222734
 
@@ -175,6 +194,12 @@
 
 <p>Calculate the longest flow paths for sub-watersheds:
 <div class="code"><pre>
+# set computational region
+g.region raster=elevation -p
+
+# calculate drainage directions using r.watershed
+r.watershed elevation=elevation drainage=drain_directions -s -a
+
 # get nsres
 eval `r.info -g map=elevation`
 

Modified: grass-addons/grass7/raster/r.accumulate/r_accumulate_nc_lfp_example_multiple.png
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