Nikos Alexandris pisze:
(I've switched to KDE (KMail) and still need to get used to sime things - so
apologies for not sending this reply to the ml in first place)
Nikos Alexandris:
While there is a proper (vector) contour map and a very clean stream
network map (digitised from scratch
(
The following question(s) might be already answered and I just miss the
hydrological background to understand why is not possible to If it is
the case, scratch-out this post entirely
)
Nikos:
Ideally, I imagine a module like:
v.stream.directions elevation=HighResolutionDEM
Nikos:
[...]
1. As far as I can remember, there are ordering systems that are based on
the length of segments (or let's call them branches) of a stream or
on the number of children branches of that (Strahler), right? If this
is correct (for some ordering systems), why is it required to
On 01.05.2010 07:46, Jarek Jasiewicz wrote:
Interested question, but I think the easiest answer is carving or stream
burining (r.stream.carve). Next reproduce r.watershed or
r.stream.extract you shall receive (almost) ideally confidential network
with supplied
HTH
Jarek
Hi Nikos,Jarek,
Achim wrote:
Further I suggest to weight the DEM with the contour information.
A guess how this could be done:
v.to.rast contourmap
r.fillnulls (to interpolate between contour lines raster map)?
r.fillnulls is better for little holes (e.g. in SRTM data)
see comparison of other methods here:
Nikos Alexandris wrote:
On Saturday 01 of May 2010 05:30:04 Nikos Alexandris wrote:
I am sort of forwarding a friends question related to hydro-processing.
While there is a proper (vector) contour map and a very clean stream
network map (digitised from scratch upon topographic maps of
(I've switched to KDE (KMail) and still need to get used to sime things - so
apologies for not sending this reply to the ml in first place)
Nikos Alexandris:
While there is a proper (vector) contour map and a very clean stream
network map (digitised from scratch upon topographic maps of
Nikos:
While there is a proper (vector) contour map and a very clean stream
network map (digitised from scratch upon topographic maps of 1:50.000)
available, the flow direction map is missing.
...
is the direction map bound to a specific stream network, i.e. the one
that r.watershed or
On Saturday 01 of May 2010 09:12:21 Achim Kisseler wrote:
On 01.05.2010 07:46, Jarek Jasiewicz wrote:
Interested question, but I think the easiest answer is carving or stream
burining (r.stream.carve). Next reproduce r.watershed or
r.stream.extract you shall receive (almost) ideally
Jarek:
Interested question, but I think the easiest answer is carving or
stream burining (r.stream.carve). Next reproduce r.watershed or
r.stream.extract you shall receive (almost) ideally confidential
network with supplied
Achim Kisseler:
Stream burning: Thats what I thought about.
Hi list!
I am sort of forwarding a friends question related to hydro-processing.
While there is a proper (vector) contour map and a very clean stream network
map (digitised from scratch upon topographic maps of 1:50.000) available, the
flow direction map is missing.
Is this information easily
On Saturday 01 of May 2010 05:30:04 Nikos Alexandris wrote:
I am sort of forwarding a friends question related to hydro-processing.
While there is a proper (vector) contour map and a very clean stream
network map (digitised from scratch upon topographic maps of 1:50.000)
available, the flow
Nikos Alexandris pisze:
On Saturday 01 of May 2010 05:30:04 Nikos Alexandris wrote:
I am sort of forwarding a friends question related to hydro-processing.
While there is a proper (vector) contour map and a very clean stream
network map (digitised from scratch upon topographic maps of
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