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

Sun Jan 28 14:05:07 GMT 2018

Thanks for the info!!

El 28/01/18 a las 14:20, Peter Danninger escribió:
> I've downloaded and testet.
>
> look at attachment.
>
> In short-form:
> -----------------------------------------
> really good, comparable with the
> USGS-NASA .hgt-files.
>
>  N74E018, N74E019:
>    Bjornoya (Bäreninsel) missing,
>    only "0", files deactivated
>
>  N52E006, N51E005, N51E008, N50E005:
>    some void's, easily correctable
>
> comparisation with USGS-NASA files
> only in the Alps-area and
> only regarding min/max-values:
>
> majority are nearly identical,
> some differ by 20-30m
> regarding the min/max-values,
> but which are "better" ???
>
> regards Peter
>
> Am 27.01.2018 um 17:50 schrieb Carlos Dávila:
>> Thanks for sharing your results. Have you tested data from 
>> http://opendem.info/opendemeu_download_4326.html ?
>>
>> El 27/01/18 a las 15:56, Peter Danninger escribió:
>>> 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.
>>>>
>>>>
>>