Elevation 1" arc

[tybern]

My setup (default) is "automatic" for the elevation data, and it seems to be SRTM3 (3" arc) by default.

How to enable SRTM1 (if I choose this option, nothing change...).

I say that, because, after downloading a track with elevation inside from SRTM1 source, if I try to change with Point -> elevation, it is not the same, and it should be...

Best regards

[routeconverter]

My setup (default) is "automatic" for the elevation data, and it seems to be SRTM3 (3" arc) by default.

How to enable SRTM1 (if I choose this option, nothing change...).

Automatic tries to use SRTM 1 first and falls back to these services

           PRIORITY.put("Jonathan de Ferranti DEM 1", 1);
           PRIORITY.put("NASA SRTM 1", 2);
           PRIORITY.put(J"Jonathan de Ferranti DEM 3", 3);
           PRIORITY.put("NASA SRTM 3", 4);
           PRIORITY.put("GeoNames", 5);
           PRIORITY.put("Google Maps", 6);

If nothing is found, it tries to download SRTM 3 files.

So if you choose SRTM 1 then you should get the 1" arc data after a download (see Extras/Downloads)

[tybern]

Thanks for the reply.

But if I choose SRTM1 or Ferrandi DEM 1, nothing appends... elevation is not set, and nothing in "download".

If I choose for example SRTM3, I see downloaded data (HGT files) in the .routeconverter/srtm3 directory, but if I choose SRTM1, nothing is downloaded.

Any idea ?

[routeconverter]

Have a look at Extras/Downloads - is the download finished?
What's in the log file? Try Help/Send Error Report...

[tybern]

With "extras/downloads",  nothing started, 
and in log, nothing too...

I have messages in logs if I choose SRTM3, but nothing if SRTM1.

[tybern]

Well... I found the problem...

SRTM1 data are available only for USA from the server https://dds.cr.usgs.gov., and I'm in France.
And for ferranti1, access is forbidden.

I have SRTM1 data on my harddisk, in several formats, is there a way to use these files directly from my disk ?

Best regards

[routeconverter]

And for ferranti1, access is forbidden.

Try http://www.viewfinderpanoramas.org/Cover...s_org1.htm to download files. The coverage is not good.

I have SRTM1 data on my harddisk, in several formats, is there a way to use these files directly from my disk ?

Yes. In the options:

[tybern]

OK for the path elevation data, but which data format ? BIL, HGT, GeoTIFF, ... ?

[nordlicht]

OK for the path elevation data, but which data format ? BIL, HGT, GeoTIFF, ... ?

HGT.

[tybern]

OK for the path elevation data, but which data format ? BIL, HGT, GeoTIFF, ... ?

HGT.

OK? I've found a source for SRTM1 in HGT, but it's not always easy to find elevation european data in HGT, because GIS software and converters can read HGT but not write them (it's in theory a read only format).

So, it could be a good enhancement for future release to accept another elevation data format, like GeoTIFF or BIL/HDR.

Best regards,