[GRASS-SVN] r70057 - grass/branches/releasebranch_7_2/vector/v.net.visibility
svn_grass at osgeo.org
svn_grass at osgeo.org
Sun Dec 11 10:59:46 PST 2016
Author: neteler
Date: 2016-12-11 10:59:46 -0800 (Sun, 11 Dec 2016)
New Revision: 70057
Added:
grass/branches/releasebranch_7_2/vector/v.net.visibility/v_net_visibility.png
Modified:
grass/branches/releasebranch_7_2/vector/v.net.visibility/v.net.visibility.html
Log:
v.net.visibility: simple example with image and a lot of vector ascii (trunk, r69413 + r69414)
Modified: grass/branches/releasebranch_7_2/vector/v.net.visibility/v.net.visibility.html
===================================================================
--- grass/branches/releasebranch_7_2/vector/v.net.visibility/v.net.visibility.html 2016-12-11 18:04:46 UTC (rev 70056)
+++ grass/branches/releasebranch_7_2/vector/v.net.visibility/v.net.visibility.html 2016-12-11 18:59:46 UTC (rev 70057)
@@ -101,8 +101,8 @@
g.region vector=zipcodes_wake
d.mon wx0
d.vect areas_7_11_25
-v.net.visibility input=zipcodes_wake output=graph
-v.net.visibility input=zipcodes_wake visibility=graph output=new_graph \
+v.net.visibility input=areas_7_11_25 output=graph
+v.net.visibility input=areas_7_11_25 visibility=graph output=new_graph \
coordinates=669547.97,208348.20
d.erase
d.vect areas_7_11_25
@@ -122,6 +122,74 @@
d.vect archsites col=red
</pre></div>
+<h3>Example 6</h3>
+
+Here is an example with artificial data.
+
+<p>
+<img src="v_net_visibility.png">
+
+<p>
+Load data using here document syntax (Bash and unix-like commands lines only):
+
+<div class="code"><pre>
+v.in.ascii input=- output=simple format=standard <<EOF
+VERTI:
+B 6
+ 82.19908257 75.21788991
+ 81.67889908 71.40321101
+ 83.58623853 71.72522936
+ 84.3293578 75.21788991
+ 82.24862385 76.06009174
+ 82.19908257 75.21788991
+C 1 1
+ 82.88897401 73.66318782
+ 1 1
+C 1 1
+ 90.72645705 75.61248675
+ 1 2
+C 1 1
+ 89.37944702 69.51012912
+ 1 3
+C 1 1
+ 81.60108979 67.78669725
+ 1 4
+B 5
+ 89.92752294 73.95458716
+ 92.37981651 75.11880734
+ 91.56238532 77.29862385
+ 88.96146789 75.88669725
+ 89.92752294 73.95458716
+B 10
+ 88.54036697 70.70963303
+ 87.92192518 70.04087417
+ 87.89633028 69.00045872
+ 88.66460807 68.13372867
+ 90.15108904 68.23290821
+ 90.9426344 68.97588202
+ 90.86880734 70.11513761
+ 90.00144697 70.78336312
+ 89.06055046 70.95733945
+ 88.54036697 70.70963303
+B 9
+ 78.73119266 71.35366972
+ 80.76238532 68.90137615
+ 84.20550459 66.91972477
+ 89.87798165 65.35917431
+ 83.23494031 66.27685175
+ 80.34278748 68.00837238
+ 78.38484005 71.40292009
+ 78.40917431 72.27018349
+ 78.73119266 71.35366972
+EOF
+</pre></div>
+
+Compute the graph:
+
+<div class="code"><pre>
+v.net.visibility input=simple output=graph
+</pre></div>
+
<h2>KNOWN ISSUES</h2>
In some cases when 3 points or nodes are collinear, some wrong edges
are added. This happens only really rarly and shouldn't be a big
Copied: grass/branches/releasebranch_7_2/vector/v.net.visibility/v_net_visibility.png (from rev 69413, grass/trunk/vector/v.net.visibility/v_net_visibility.png)
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