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Discussion: GML lidar

in: Orienteering; General

Apr 25, 2018 11:59 AM # 
robplow:
I have some lidar in gml format. Anyone know how to convert that into something that OCAD or QGIS can handle?
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Apr 25, 2018 2:38 PM # 
bchubb:
It appears Global Mapper will open GML. The only free tool, at least according to GRIME http://www.grime.net/gistools/g.htm is Virtual Terrain Project http://vterrain.org/
Apr 25, 2018 2:41 PM # 
robplow:
Thanks Bryan - I'll try that.
May 3, 2018 11:56 PM # 
robplow:
The data is a publicly available 5m grid DEM in Japan. On the download site they recommend some free software from which I was able to get hillshadings in GeoTIFF and from that I can generate contours in QGIS. Also managed to generate contours in vterrain but had trouble exporting them - something to do with projections I think.

Being 5m grid they are not great but a whole lot better than the non-lidar base maps which are currently my only option in most areas.

While I was doing all this I got an email from Gian-Reto at OCAD asking if I could give him some of the data so he can add GML functionality to OCAD. He has shown me an initial output of 1m contours - says he will be finished with this project by early next week.

Pretty good service - you might even think service like that is worth paying an annual fee for.
May 8, 2018 2:57 AM # 
Kenny:
GML import is already in the latest version of OCAD 2018.

However, note the restriction per
the wiki

namely;
"Import GML FilesSpace.PNGThis function is available in OCAD Mapping Solution.
Choose this function to import Normbasierte Austauschschnittstelle (NAS) data.
OCAD cannot import other GML files. "
May 8, 2018 3:10 AM # 
robplow:
Gian-Reto just finished developing the ability to process the gml data I gave him and will include it in the next update next week

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