Higher resolution elevation data

[chbla]

Hi there,

I've got a question, there is quite high-resolution elevation data available for Austria, and I managed to get it loaded in GlobalMapper (see screenshot for a difference between existing hgt files I have vs the high-resolution ones).

As I have no experience with GIS whatsoever I wanted to ask:

1. Are there benefits to using these in Locus, or does it have its own limitation regarding resolution? (e.g. for the slope shading)
2. Can anyone tell me how this should be exported to be usable? I can apparently export it in SRTM 1" and 3" .hgt files which makes me wonder if this reduces that resolution or if it keeps it?

Maybe someone familiar with all this GIS magic can help me.

Thanks a lot,
Christoph

[gynta]

3"
http://www.viewfinderpanoramas.org/Coverage%20map%20viewfinderpanoramas_org3.htm

1"
http://www.viewfinderpanoramas.org/Coverage%20map%20viewfinderpanoramas_org1.htm
select area of map shading and download it
extract and copy the altitude *:hgt files to Locus/data/srtm directory

make it sense?

3": 1,75MB
1": 24,7MB - whole Alps 2,5 GB (roughly)

Compare...

...slope: http://www.oldboys.at/comp1/
plausible view?

...hillshading: http://www.oldboys.at/comp2/

[chbla]

Thanks a lot for your answer - but I think you misunderstood. Why download?
The files I want to use are of higher resolution.

[gynta]

just do it

[chbla]

Do what? Did you even read my question?

[gynta]

there is quite high-resolution elevation data available for Austria

http://www.viewfinderpanoramas.org/Coverage%20map%20viewfinderpanoramas_org1.htm
or other source?

Are there benefits to using these in Locus?

try it

I can apparently export it in SRTM 1" and 3" .hgt files

great ! - so, just use it.

[chbla]

it's a different source, a 10m grid (just see my attached image in the first post - it's a comparison between my sources and the ones you posted)

my question is:
2. I can apparently export it in SRTM 1" and 3" .hgt files which makes me wonder if this reduces that resolution or if it keeps it?

Could you give me a link to the area you posted?
I'd like to compare it but cannot find a name on it

[gynta]

i fear your export ends in the same result.
link to this area? uff  - have to search...
brb

[chbla]

yes that's what I wan to find out, how to export and use the higher resolution files..

[gynta]

[chbla]

Ah I did not generate the data for this point yet - if you have elevation data for all parts of Austria, could you maybe take a screenshot of 47.3573592,9.7254071 with the zoom/scale set to 400m and slope shading on? I'd like to compare it as I have two different files

[gynta]

sure...
1" and 3" ?

[chbla]

if possible yes, but 1" would be enough I think

[gynta]

. 1"

. 1"

...blurry because it was 143% of zoom16

[chbla]

Looks really different ..
which map/style did you use exactly so I can compare better?