[Marble-devel] SRTM Tiles

[Torsten Rahn]

Hi,

On Tuesday, 13. September 2011 18:40:20 Torsten Rahn wrote:
> The current version is using some compilation of SRTM30 data and ETOPO2.

The current Atlas map view is using some 1GB version of this gridded data:

http://topex.ucsd.edu/WWW_html/srtm30_plus.html

which was processed using the GMT tools to create the desired byte vs. 
elevation profile to get proper colors.

From what I understand the Cleantopo2 data mentioned before improves this data 
even more. So maybe for lower zoom levels we should use CleanTopo for the 
Elevation Profile?

Best Regards,
Torsten


> Ideally a future compilation of (Niko's uploaded) SRTM data would use
> 
> http://www.shadedrelief.com/cleantopo2/
> 
> Which has some artefacts in the original ETOPO2 data cleaned up.
> 
> If there is somebody here on this list who knows a better source for global
> elevation data please speak up!
> 
> BR,
> Torsten
> 
> On Tuesday, 13. September 2011 18:06:20 Torsten Rahn wrote:
> > Hi,
> > 
> > Great effort!
> > I just looked at the data quickly using a browser and figured that the
> > data seems to be the original SRTM data (with or without error
> > corrections) which naturally lacks
> > 
> > * areas above a latitude of 60 Degrees north and no Antarctica (so no
> > Finland, parts of Canada are missing and Sarah Palin can't see Russia on
> > those tiles)
> > 
> > * bathymetry ("ocean floor") is missing
> > 
> > Such a (much lower res) compilation of different data sources with SRTM
> > data is used in Marble's Atlas map view.
> > 
> > So ideally in the future we'd have that added to the data so that we can
> > reuse this data for an improved version of Marble's Atlas or Satellite
> > View.
> > 
> > BR,
> > Torsten
> > 
> > On Tuesday, 13. September 2011 17:52:45 Dennis Nienhüser wrote:
> > > Hi Florian,
> > > 
> > > On 13.09.2011 16:40, Florian Eßer wrote:
> > > > Hi,
> > > > 
> > > > I have started to work on the integration of my
> > > > ElevationProfileFloatItem with Niko's AltitudeModel.
> > > 
> > > great! :)
> > > 
> > > > However, since the srtm2.dgml map from Niko's branch still has
> > > > "localhost" given as tile server, I do not get any elevation data to
> > > > test with. Are the tiles already online somewhere?
> > > 
> > > Niko is currently uploading them, 15 GB are already done. They're
> > > available at [1].
> > > 
> > > Regards,
> > > Dennis
> > > 
> > > [1] http://files.kde.org/marble/maps/earth/srtm2/
> > > 
> > > > If not, how else can I get (or generate) them?
> > > > 
> > > > I have an own (university) web server here with plenty of disk space
> > > > and bandwidth. I could offer to host the data for testing/development
> > > > purposes while they are not yet available from the KDE servers.
> > > > 
> > > > Cheers
> > > > Florian
> > > > _______________________________________________
> > > > Marble-devel mailing list
> > > > Marble-devel at kde.org
> > > > https://mail.kde.org/mailman/listinfo/marble-devel
> > > 
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