I found a similar question here:<br><br><a href="http://gis.stackexchange.com/questions/22735/how-to-calculate-stream-order-for-vector-data-without-a-dem">http://gis.stackexchange.com/questions/22735/how-to-calculate-stream-order-for-vector-data-without-a-dem</a><br>
<br><br><br><div class="gmail_quote">On Mon, May 14, 2012 at 2:53 PM, Filipe Silva Dias <span dir="ltr"><<a href="mailto:filipesdias@gmail.com" target="_blank">filipesdias@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi Johannes<br><br>Yes, its in vector format, but it could be converted to raster if necessary.<br><br>I installed v.strahler with g.extension, but loading it produced an error. Is there another one? <br><br>Thanks<br><br>
Traceback (most recent call last):<br> File "C:\OSGeo4W\apps\grass\grass-6.4.2\etc\wxpython\gui_m<br>odules\prompt.py", line 1105, in OnKeyPressed<br><br>self.parent.RunCmd(cmd)<br> File "C:\OSGeo4W\apps\grass\grass-6.4.2\etc\wxpython\gui_m<br>
odules\goutput.py", line 523, in RunCmd<br><br>task = menuform.GUI(show = None).ParseCommand(command)<br> File "C:\OSGeo4W\apps\grass\grass-6.4.2\etc\wxpython\gui_m<br>odules\menuform.py", line 1732, in ParseCommand<br>
<br>blackList = _blackList)<br> File "C:\OSGeo4W\apps\grass\grass-6.4.2\etc\python\grass\s<br>cript\task.py", line 460, in parse_interface<br><br>tree = etree.fromstring(get_interface_description(name))<br> File<br>
"C:\OSGeo4W\apps\Python27\lib\xml\etree\ElementTree.py",<br>line 1283, in XML<br><br>return parser.close()<br> File<br>"C:\OSGeo4W\apps\Python27\lib\xml\etree\ElementTree.py",<br>line 1636, in close<br>
<br>self._raiseerror(v)<br> File<br>"C:\OSGeo4W\apps\Python27\lib\xml\etree\ElementTree.py",<br>line 1488, in _raiseerror<br><br>raise err<br>xml.etree.ElementTree<br>.<br>ParseError<br>:<br>no element found: line 1, column 0<div class="HOEnZb">
<div class="h5"><br>
<br><br><br><br><div class="gmail_quote">On Mon, May 14, 2012 at 2:47 PM, Johannes Radinger <span dir="ltr"><<a href="mailto:jradinger@gmx.at" target="_blank">jradinger@gmx.at</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi Filipe,<br>
<br>
you mean your hydrological network is in vector format?<br>
<br>
Maybe you can try the v.strahler add-on but I don't know<br>
how uptodate this module is:<br>
<br>
<a href="http://grass.osgeo.org/wiki/GRASS_AddOns#v.strahler" target="_blank">http://grass.osgeo.org/wiki/GRASS_AddOns#v.strahler</a><br>
<br>
/johannes<br>
<br>
<br>
Am 14.05.2012 um 13:26 schrieb Filipe Silva Dias:<br>
<div><div><br>
> Dear all,<br>
><br>
> I have a digitized hydrological network and I need to calculate the stream order (Horton, Strahler etc).<br>
><br>
> I found r.stream.order but it requires that the hydrological network comes from a DEM, which in my case produced an hydrological network that is considerably different than the digitized one (tried both with r.wateshed, r.terraflow and r.stream.extract).<br>
><br>
> Is there a tool capable of doing this? Apparently ArcGIS can do this, but id prefer na open source solution.<br>
><br>
> Thanks<br>
><br>
> Best regards<br>
><br>
> Filipe<br>
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