March 31, 2022, 4:48pm
You might (or not) be familiar with freemap.sk - an OSM-based map of a part of Europe, hosted by a Slovakia-based OSM chapter. The map covers also Slovenia and now we would like to upgrade the level of map detail for your country using the LIDAR data I learned are available.
In this context, it would help us a lot if we had the LIDAR data in DEM, or .ASC formats.
If you have, or know somebody else who has such data, please let me know.
April 1, 2022, 10:52am
http://gis.arso.gov.si/evode/profile.aspx?id=atlas_voda_Lidar@Arso offers an option to download individual 1km2 files:
The DMR link (underlined in the screenshot above) points to http://gis.arso.gov.si/lidar/dmr1/b_22/D96TM/TM1_500_118.txt
D96TM = epsg:3794, see: https://epsg.io/3794
https://egp.gu.gov.si/egp/?lang=en GURS has published news:
A new Elevation layer in National Topographic Model
A new layer - Elevation - has been added to the National Topographic Model (Chapter 2). The object catalog for Topographic dataset has also been supplemented accordingly.
This should be easier to download (registration required, but data is CC-BY 4.0) in one piece, but am not sure if it is usable for you. It offers some documentation, but only in Slovenian:
I haven’t checked this dataset yet.
April 1, 2022, 10:55am
April 1, 2022, 11:00am
There are instructions for download
but only in slovenian. Google translate may help a bit.
They can also issue the data on a portable media.
April 1, 2022, 12:08pm
thank you very much, looks promising. I will update this thread with any new developments in this matter.
April 8, 2022, 10:04am
…and the results are in. Please compare (for example)
… with the new freemap layer X, featuring the Slovenia LIDAR data (and some beautiful karst landscape):
April 9, 2022, 6:41pm
Nice, I am really impressed by the improvement in details over the old SRTM! Bravo!
There seem to be some artifacts near the sea level. Missing data, or negative heights:
Did you figure out how to sort out the attribution?
April 10, 2022, 3:31am
(the freemap.sk programmer) says that the artifacts is a problem he is aware of, but is unable to fix at the moment. Martin
As for the LIDAR data credit, we thought it was public domain, but if somebody finds out otherwise, we will add the required text to the map. The best way to let us know is to use the issue tracker at
April 10, 2022, 6:06am
Not sure what is the exact licensee for the LIDAR data, couldn’t find any definite answer. Other public institutions generally release such data under CC-BY 4.0 or similar. Will try to look into that.
April 11, 2022, 1:24pm
Martin fixed the artifacts appearing along the coastline, but supposedly there could be some more inland, in marshes, or other water bodies. There is an issue for this, in the freemap issue tracker