El 3/4/21 a las 15:06, Gerd Petermann escribió:
Hi Carlos,
please double check: I don't have files for N60E157, N72E057 and N77E083 Correct I have a N64W180.hgt with a few non-zero values. According to Google satellite imagery, this tile is all sea. Where did you get it from? I can only find 3 arcsec tile from viewfinderpanoramas for this tile, no 1 arcsec in VFP, SRTM or ALOS.
Results are in new patch.
Gerd
________________________________________ Von: mkgmap-dev <mkgmap-dev-bounces@lists.mkgmap.org.uk> im Auftrag von Carlos Dávila <carlos@alternativaslibres.org> Gesendet: Samstag, 3. April 2021 13:27 An: mkgmap-dev@lists.mkgmap.org.uk Betreff: Re: [mkgmap-dev] Deletion of unneeded hgt files
Regarding tiles covering Caspian Sea (N37E051 to N44E049), I thought it's height would be 0, but if the real height is -29m then they should not be removed from known-hgt.txt. But they are no longer available from SRTM or ALOS.
The other tiles removed in my patch are in open sea areas, so their height should be 0 and can be IMHO safely removed.
El 3/4/21 a las 10:04, Gerd Petermann escribió:
Hi Carlos,
not sure what to do with this. Seems your patch removes the files which are listed here: https://www.opentopodata.org/notes/invalid-srtm-zips/
My SRTM directory contains the listed files and they show a constant height of -29m as stated in the linked page.
My understanding is that you don't have those files, but you should have. A non-existing file is treated like a file with height 0.
Gerd
________________________________________ Von: mkgmap-dev <mkgmap-dev-bounces@lists.mkgmap.org.uk> im Auftrag von Carlos Dávila <carlos@alternativaslibres.org> Gesendet: Samstag, 3. April 2021 09:45 An: Development list for mkgmap Betreff: [mkgmap-dev] Deletion of unneeded hgt files
Attached patch deletes some hgt files which correspond to ocean areas from known-hgt.txt file. They just lead to confusing warnings when running mkgmap to generate a map with DEM.
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