[GRASS-user] Calculate stream order from digitized hydrology network

[Filipe Silva Dias]

Hi Johannes

Yes, its in vector format, but it could be converted to raster if necessary.

I installed v.strahler with g.extension, but loading it produced an error.
Is there another one?

Thanks

Traceback (most recent call last):
  File "C:\OSGeo4W\apps\grass\grass-6.4.2\etc\wxpython\gui_m
odules\prompt.py", line 1105, in OnKeyPressed

self.parent.RunCmd(cmd)
  File "C:\OSGeo4W\apps\grass\grass-6.4.2\etc\wxpython\gui_m
odules\goutput.py", line 523, in RunCmd

task = menuform.GUI(show = None).ParseCommand(command)
  File "C:\OSGeo4W\apps\grass\grass-6.4.2\etc\wxpython\gui_m
odules\menuform.py", line 1732, in ParseCommand

blackList = _blackList)
  File "C:\OSGeo4W\apps\grass\grass-6.4.2\etc\python\grass\s
cript\task.py", line 460, in parse_interface

tree = etree.fromstring(get_interface_description(name))
  File
"C:\OSGeo4W\apps\Python27\lib\xml\etree\ElementTree.py",
line 1283, in XML

return parser.close()
  File
"C:\OSGeo4W\apps\Python27\lib\xml\etree\ElementTree.py",
line 1636, in close

self._raiseerror(v)
  File
"C:\OSGeo4W\apps\Python27\lib\xml\etree\ElementTree.py",
line 1488, in _raiseerror

raise err
xml.etree.ElementTree
.
ParseError
:
no element found: line 1, column 0




On Mon, May 14, 2012 at 2:47 PM, Johannes Radinger <jradinger at gmx.at> wrote:

> Hi Filipe,
>
> you mean your hydrological network is in vector format?
>
> Maybe you  can try the v.strahler add-on but I don't know
> how uptodate this module is:
>
> http://grass.osgeo.org/wiki/GRASS_AddOns#v.strahler
>
> /johannes
>
>
> Am 14.05.2012 um 13:26 schrieb Filipe Silva Dias:
>
> > Dear all,
> >
> > I have a digitized hydrological network and I need to calculate the
> stream order (Horton, Strahler etc).
> >
> > 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).
> >
> > Is there a tool capable of doing this? Apparently ArcGIS can do this,
> but id prefer na open source solution.
> >
> > Thanks
> >
> > Best regards
> >
> > Filipe
> > _______________________________________________
> > grass-user mailing list
> > grass-user at lists.osgeo.org
> > http://lists.osgeo.org/mailman/listinfo/grass-user
>
>
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