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

[Filipe Silva Dias]

I found a similar question here:

http://gis.stackexchange.com/questions/22735/how-to-calculate-stream-order-for-vector-data-without-a-dem



On Mon, May 14, 2012 at 2:53 PM, Filipe Silva Dias <filipesdias at gmail.com>wrote:

> 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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