I have now gotten it to work in qgis, however, how can I best export it for Osmand? I do have Mapc2mapc, but i cannot find any good formats to export it as.
Op vrijdag 10 juli 2020 11:12:05 UTC+2 schreef Mika Van de wiel: > > Hmm, that would be awesome! we in holland got free hightmaps, but i > believe you can only download them in a few formats. if you could send me > the tutorial on how to do it in qgis and your nodes I think i can try it! > > Op vrijdag 10 juli 2020 03:21:06 UTC+2 schreef A Thompson: >> >> Hi! I'm no expert, but have experimented with this sort of thing. As far >> as I know: >> >> OsmAnd's elevation data comes from the NASA SRTM/ASTER data that is >> available freely for the whole world except towards the poles. This has a >> horizontal resolution of 1 arc-second, about 30 metres. The vertical >> accuracy varies but seems to be no better than +/-5m. So it doesn't make >> sense to have contour line spacing too close. >> >> OsmAnd's contour lines are pre-computed in the download, rather than >> being generated dynamically on your device from raw elevation data, so you >> can't try closer spacing just by tweaking the rendering styles. >> >> Many countries are providing open access to more accurate DTM/DEM data >> from LIDAR surveys. In the UK we have this only for flood modelling, which >> if one's interested in hills is the opposite of what one wants! LIDAR data >> can be amazingly accurate, e.g. you can see the shape of a car. If you have >> such data, you can generate your own contour lines in QGIS and get them to >> show in OsmAnd. If you're interested I could post some notes I made when I >> tried it, but it requires a little dedication. I found that I could now see >> features such as cliffs and quarries that had not been marked as such on >> OSM, but for me it wasn't worth the large file sizes of what I had >> generated. That was three years ago when OsmAnd's minimum spacing was 10m - >> I hadn't noticed that the "high" setting now gives 5m. This shows my >> missing quarries, but must be the limit for SRTM data. (Unless OsmAnd is >> now tapping in to LIDAR? I can't find any information on that.) >> >> Just google any of the terms I used if you're not familiar! I hope that's >> of interest. >> >> On Thursday, July 9, 2020 at 7:53:18 PM UTC+1 [email protected] wrote: >> >>> So i live in the Netherlands, and the landscape is pretty flat here. >>> However we still have some small relief in the landscape. Most of these >>> little hills are no more then 20m but they can be pretty steep. Therefore i >>> would like to have contour lines to better estimate the terrain. However, >>> the standard contour lines in Osmand only come in three set intervals, Low, >>> medium and high. I beleive the high setting displays the contour lines at >>> 5m, but this is still not enough. Is there a way to get these contour lines >>> to display at a custom interval, like 1m? is this maybe possible by editing >>> the rendering file? i would love to hear back from you guys! >> >> -- You received this message because you are subscribed to the Google Groups "OsmAnd" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/osmand/8d74aa49-7dec-4962-8956-00189dd6455eo%40googlegroups.com.
