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HDR file for elevations
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Hello, would it be possible in the future to make elevation calculations with HDR files?
Hello, would it be possible in the future to make elevation calculations with HDR files?
I like this idea 
Hello Agus,
may you specify your idea a little more? By HDR you mean more detailed elevation files, for example these from the Sonny? LoMaps & LoRouter already use them.
If you want to have hill-shading and some other features in the app computed also with these more precise data, simply download and unpack them into Locus/data/srtm directory. This is current solution for users who wants these detailed data instead of 3" data app currently downloads. We are thinking about publishing also 1" for users for direct download, but this was not yet decided and implemented. Thanks for understanding.
Hello Agus,
may you specify your idea a little more? By HDR you mean more detailed elevation files, for example these from the Sonny? LoMaps & LoRouter already use them.
If you want to have hill-shading and some other features in the app computed also with these more precise data, simply download and unpack them into Locus/data/srtm directory. This is current solution for users who wants these detailed data instead of 3" data app currently downloads. We are thinking about publishing also 1" for users for direct download, but this was not yet decided and implemented. Thanks for understanding.
Hi both of you,
To be honest, I already dowloaded elevation data of many dozens of international and national survey institutes - but none of them published their data in a format called "HDR" ;-)
The only one I stumbled about this file type has been when downloading from "ALOS World 3D" where .hdr are (unimportant) meta files with no elevation information. Soit seems to be a very uncommon or Orux-only format.
By far the 2 most common used formats are .hgt - with its known limitations. And for people which are interested in more precise files in common geographic projections: .geotiff
So if Locus someday decides to add a new elevation format, I would go for .geotiff
But in my opition for each use case of Locus, LIDAR-based 1"-.hgt files provide the maximum necessary quality. You won't get any better results in any usecase using more detailed files. Not to mention its sizes would explode compared to 1" .hgt files of country.
Please have a look at the following thread, especially the last post: https://oruxmaps.org/forum/index.php?topic=34772.0
Hi both of you,
To be honest, I already dowloaded elevation data of many dozens of international and national survey institutes - but none of them published their data in a format called "HDR" ;-)
The only one I stumbled about this file type has been when downloading from "ALOS World 3D" where .hdr are (unimportant) meta files with no elevation information. Soit seems to be a very uncommon or Orux-only format.
By far the 2 most common used formats are .hgt - with its known limitations. And for people which are interested in more precise files in common geographic projections: .geotiff
So if Locus someday decides to add a new elevation format, I would go for .geotiff
But in my opition for each use case of Locus, LIDAR-based 1"-.hgt files provide the maximum necessary quality. You won't get any better results in any usecase using more detailed files. Not to mention its sizes would explode compared to 1" .hgt files of country.
Please have a look at the following thread, especially the last post: https://oruxmaps.org/forum/index.php?topic=34772.0
Hi Agus, Sonny,
thanks for extra info. As you also mentioned, HDR (if such format really exists) is definitely not a globally used format. If there is interest in using it on your side, please use the "gdal_translate" tool (or any other) and convert it into support HGT format. Thanks for understanding.
Hi Agus, Sonny,
thanks for extra info. As you also mentioned, HDR (if such format really exists) is definitely not a globally used format. If there is interest in using it on your side, please use the "gdal_translate" tool (or any other) and convert it into support HGT format. Thanks for understanding.
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