[mkgmap-dev] Is dem-tdb branch ready for trunk ?

Sat Jan 27 14:56:51 GMT 2018

Some results from my .hgt-tests:

I wanted to find usable .hgt files for my
web-application zu add height data to .gpx

http://peter.myds.me/HDS/Tipps_Tricks/GPS/GPXclean/GPXclean.html
  ==> look at: "Spezialisten-Funktionen per Aufrufparameter"
  ==> sorry, only German ...

  ==> The results are in the attachment.

In short form:
-----------------------------------------------------
Viewfinderpanoramas Medium Europe 3sec:
   ==> lots of voids and too low height values.

NASA_USGS 1sec:
   ==> no voids, but some too low height values.
   not too bad, but easily correctable by
   directly adjacent height values.
   BUT only up to N59 in the north.

Viewfinderpanoramas Northern Europe 1/3 sec:
   ==> some voids in Island in the overlay
   row/col, but easily correctable by
   directly adjacent height values.

To sum up:
More then 3100 .hgt files without real problems.
As far as available these are 1sec files.
Only in the very north 3sec .hgt files.

I'm happy with the NASA_USGS 1sec .hgt files :-)

Peter

http://www.danninger.eu

Am 27.01.2018 um 15:06 schrieb Carlos Dávila:
> El 27/01/18 a las 14:57, Carlos Dávila escribió:
>> I have no objective method to compare hgt sources (is there any?)
> 
> Well, a method I have already used is to get the number of voids in a 
> hgt file using QGIS.
> 
> 
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