Hi,
for Europe, you could also use the EU-DEM (
http://www.eea.europa.eu/data-and-maps/data/eu-dem) a hybrid product based
on SRTM and ASTER GDEM data fused by a weighted averaging approach = full
compatibility with SRTM, but with better data ;)
Sylvain
2014-08-28 20:49 GMT+02:00 Peter Barth
On 29/08/2014 12:43, Sylvain Maillard wrote:
for Europe, you could also use the EU-DEM
(http://www.eea.europa.eu/data-and-maps/data/eu-dem) a hybrid product
based on SRTM and ASTER GDEM data fused by a weighted averaging
approach = full compatibility with SRTM, but with better data
Nice ! Is
Hi all,
I created a new challenge for MapRoulette: Fix waterway direction.
As the waterway's direction in OSM denotes the direction of the water's
flow, I started to compare them to SRTM. This leads to more than 1
million wrong directions for Europe only. Many times SRTM is right,
however, due
On Thursday 28 August 2014, Peter Barth wrote:
Hi all,
I created a new challenge for MapRoulette: Fix waterway direction.
As the waterway's direction in OSM denotes the direction of the
water's flow, I started to compare them to SRTM. This leads to more
than 1 million wrong directions for
Hi,
Christoph Hormann schrieb:
Great to see the waterways are getting some attention. Does this only
analyze SRTM elevations at start and end point or are the surrounding
waterways considered?
currently start and end point only. I have code to do more, but for the
easy tasks that was not
On 28/08/2014 19:49, Peter Barth wrote:
A more detailed description can also be found on my user diary here:
http://www.openstreetmap.org/user/Peda/diary/23632
Your statement that canals may flow uphill is incorrect. Where canals
pass over a summit, the water supply is fed into the topmost
On Thursday 28 August 2014, Peter Barth wrote:
]...] But as I'd
like to get a mostly complete waternetwork for another project, I'm
planning on extending the challenge at some point.
If you are hoping for a complete network right from the OSM database
without post processing you have a long
Am 28.08.2014 um 21:48 schrieb Peter Barth:
Hi,
Christoph Hormann schrieb:
Great to see the waterways are getting some attention. Does this only
analyze SRTM elevations at start and end point or are the surrounding
waterways considered?
currently start and end point only. I have code
Not to brag, but New York State is already all done. I mean, there may
be one or two mistakes, but when I was entering all of the streams
listed in Wikipedia for NY, I set the flow direction properly. So if
you have a way to exclude New York, you will have more productive
users.
-russ
Peter Barth
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