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Elevation data from the Norwegian Mapping Authority. #2527

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Supermagnum opened this issue Dec 27, 2020 · 17 comments
Closed

Elevation data from the Norwegian Mapping Authority. #2527

Supermagnum opened this issue Dec 27, 2020 · 17 comments

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@Supermagnum
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Supermagnum commented Dec 27, 2020

Please implement the free and open DTM10 data from Kartverket aka the Norwegian Mapping Authority. It’s in 10x10 meter grid measurements, with a accuracy of ± 4 to 6 meters,as it’s superior to any SRTM data.

Preprocessed national dataset exports are available.
All datasets are in EUREF89, NN2000. UTM zone 33 has full coverage. Zone 32 and 35 where applicable. It is available here:
https://kartkatalog.geonorge.no/metadata/height-dtm-10/dddbb667-1303-4ac5-8640-7ec04c0e3918
There is also a API. DTM 50:
https://kartkatalog.geonorge.no/metadata/height-dtm-50/e25d0104-0858-4d06-bba8-d154514c11d2

DTM 10 API:
https://kartkatalog.geonorge.no/metadata/dtm-10-terrengmodell-utm33/dddbb667-1303-4ac5-8640-7ec04c0e3918

This looks to be 1 meters resolution:
https://kartkatalog.geonorge.no/metadata/hoeyde-dom-1-utm32-wcs/08edfa0c-0e8f-44eb-80a6-ddbf3d1b3a64

All the data is licensed under :
Creative Commons BY 4.0 (CC BY 4.0)

@rmackay9
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I suspect this is similar to this issue we found for finland ArduPilot/ardupilot#12923

@meee1
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meee1 commented Dec 28, 2020

if you have the data as a geotiff, you can use it inside MP right now. https://discuss.ardupilot.org/t/custom-imagery-in-mission-planner/10280/13?u=michael_oborne

@Supermagnum
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Supermagnum commented Mar 10, 2021

.DEM files are available, but does Mission planner or APM planner support those ?

@mbheir
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mbheir commented Mar 25, 2021

@Supermagnum I'm having the same issue. Is there a way to use the DTM10/30 datasets from Norwegian MA in Ardupilot? (without running everything trough MP)

@meee1
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meee1 commented Mar 25, 2021

https://kartkatalog.geonorge.no/metadata/dtm-10-terrengmodell-utm33/dddbb667-1303-4ac5-8640-7ec04c0e3918
you can grab the geotiffs from this link. im looking at supporting ETRS89, but in the mean time just need to convert them to WGS84 and they will work as is

@meee1
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meee1 commented Mar 25, 2021

after a quick read it seems they are similar, apart from one deals with tectonic movement, one does not.

@meee1
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meee1 commented Mar 25, 2021

ive just added support to beta MP

@mbheir
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mbheir commented Mar 26, 2021

I tried out the beta, using a DTM10 TIF from the link in your comment and it loaded in MP! However, there are some major issues.
I put a few screenshots to illustrate. The yellow rectangle shows where MP says I have Geotiff data, and the red shows where I'm supposed to have Geotiff data (very ish). (you can verify this by looking at the black/white elev map too. could it be rotated?). Also the elevation data is very strange(absolutely wrong, 0m on land many places and large elevation in the middle of the ocean), and looks misplaced.

geotiff_area_draw

@meee1
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meee1 commented Mar 26, 2021

can you try the new beta again. just push a fix

@meee1
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meee1 commented Mar 26, 2021

tip, use Control-W and turn on terrain

@meee1
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meee1 commented Mar 26, 2021

i just found another bug, so hold off

@meee1
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meee1 commented Mar 26, 2021

image
example

@Supermagnum
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after a quick read it seems they are similar, apart from one deals with tectonic movement, one does not.

Not that I am aware of. We just have to wait for this request to be resolved. I am hoping for 1 meters resolution.

@Supermagnum
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Supermagnum commented Mar 26, 2021

Note:
The last time the files for DTM10 that were updated was in 2013. The Norwegian Mapping Authority instead prioritises the establishment of the National Detailed Elevation Model (hoydedata.no), where new elevation models are made available as they are produced. At hoydedata.no there are also ready-made exporters of nationwide terrain models with a resolution of 10 meters. These are generated from detailed laser data where available. This is supplemented with height data from the 2013 edition of DTM10 if necessary to get full coverage. 1 meters resolution is also available, it appears to be constantly updated.

@mbheir
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mbheir commented Mar 26, 2021

The DTM10 dataset now works like a charm! It also loads on the APM as expected. Thank you so much, this is so much better than the srmt data!

mp_geotiff_working

@rmackay9
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I think we can close this issue now but please tell me if I've got it wrong. We also have SRTM for Norway now too.

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