DEM and "holes"

older
DEM-file generation from geo-tiff...

Frank Stinner

31 Dec 2017 31 Dec '17

10:17 a.m.

Unfortunately we have no chance for a good shading if the HGT's have so much "holes" (no data values) like nepal. I have made this picture with QGIS. The blue areas are "no data". I don't know, what makes mapsource with this. Frank --- Diese E-Mail wurde von Avast Antivirus-Software auf Viren geprüft. https://www.avast.com/antivirus

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nepal.jpg (image/jpeg — 386.9 KB)

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Frank Stinner

1 Jan 1 Jan

6:28 p.m.

A short test with the geo-tiffs from https://earthexplorer.usgs.gov/ (see mail from franco_bez) for nepal show fewer holes. And we have 1" distance! But a login is necessary. I have a little c#-prog based on the gdal-lib for translating between hgt and 16-bit geotiff. Frank --- Diese E-Mail wurde von Avast Antivirus-Software auf Viren geprüft. https://www.avast.com/antivirus

Frank Stinner

6:30 p.m.

Sorry, here is the jpeg. Frank --- Diese E-Mail wurde von Avast Antivirus-Software auf Viren geprüft. https://www.avast.com/antivirus

Frank Stinner

6:32 p.m.

Sorry, here is really the jpeg. Frank --- Diese E-Mail wurde von Avast Antivirus-Software auf Viren geprüft. https://www.avast.com/antivirus

Thomas Morgenstern

6:41 p.m.

Hi Frank, can you give us a compiled version for windows for the geotiff ----> hgt converter ? thomas -------------------------------------------------- Von: "Frank Stinner" <Frank.Stinner@kabelmail.de> Datum: Montag, 1. Januar 2018 18:28 An: <mkgmap-dev@lists.mkgmap.org.uk> Betreff: Re: [mkgmap-dev] DEM and "holes"

...

A short test with the geo-tiffs from https://earthexplorer.usgs.gov/ (see mail from franco_bez) for nepal show fewer holes. And we have 1" distance! But a login is necessary.

I have a little c#-prog based on the gdal-lib for translating between hgt and 16-bit geotiff.

Frank

--- Diese E-Mail wurde von Avast Antivirus-Software auf Viren geprüft. https://www.avast.com/antivirus

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