Just noticed it today and would like to share. Last year, NASA/JPL
announced that they will finally release SRTM ~30m to areas outside
the USA starting with Africa.
I noticed today that data is now available for my country. Might be
available for your areas too.
--
cheers,
maning
One more idea is to make sure the DEM is projected. Flow algorithms, in
GRASS and ArcGIS, get messed up by unprojected surfaces. Be careful choosing a
projection for such a large area. Also projecting should be done after
you put the mosaic together, as you may get streaks around
On Tue, Jan 13, 2015 at 7:52 PM, Daniel Victoria
daniel.victo...@gmail.com wrote:
Now, the thing is, my main interest is to fill the voids in the SRTM data.
So I though about using r.terraflow to get the filled elevation. Should I
continue on that path or would it be better to use r.fill.null
On Sat, Jan 10, 2015 at 7:34 PM, Fábio Dias fabio.d...@gmail.com wrote:
Hello again,
This issue arised from my other thread ('v.generalize: does it take
forever?'). Since I think it would be bad practice to mix issues on
the same thread, I'm opening this one.
I have a dataset that
Well, r.terraflow does run on my machine.
It took 52 minutes to process the following region:
projection: 3 (Latitude-Longitude)
zone: 0
datum: wgs84
ellipsoid: wgs84
north: 18:59:59S
south: 22S
west: 52W
east: 49:59:59W
nsres: 0:00:01
ewres: 0:00:01
Stephan, I'll give r.watershed a try and let it run for a couple of days.
Thanks
Thayer, I used r.recode because the person that sent me the data messed up
the null values. So in order to fix that I did:
1) use r.external to bring the data to Grass
2) fix null values with r.recode, which was
That's a good point Thayer. Will do. Will do
On Tue, Jan 13, 2015 at 1:02 PM, Thayer Young thaye...@yahoo.com wrote:
Daniel,
Before you go through the trouble of recompiling you may want to try
downloading a smaller SRTM DEM from Earth Explorer and make sure it works
with r.terraflow. I
Charlie,
I just downloaded some SRTM 1arc sec. from EarthExplorer. The data is
supplied in 3 different file types, GeoTIFF, DTED or BIL and they are all
in Integer values (Int16). No floating point elevation values.
Cheers
Daniel
On Tue, Jan 13, 2015 at 12:12 PM, Charlie Shobe
