If you want to manually enter the height of building in your neighborhood, the Android App StreetComplete[0] allows you to do it rather painlessly. The interface is rather intuitive, and it will prompt you only if the data is missing in OSM.
Actually I believe there are 2 different data. The number of level of the building, (from which you can extrapolate an height) and the actual height in meter (which is much harder to estimate as a random mapper). Street Complete prompt you for the former IIRC.
If you want to manually enter the height of building in your neighborhood, the Android App StreetComplete[0] allows you to do it rather painlessly. The interface is rather intuitive, and it will prompt you only if the data is missing in OSM.
[0] https://play.google.com/store/apps/details?id=de.westnordost...
Real heights would be great. Currently I use random heights.
Actually I believe there are 2 different data. The number of level of the building, (from which you can extrapolate an height) and the actual height in meter (which is much harder to estimate as a random mapper). Street Complete prompt you for the former IIRC.
Ah yes, the levels, I can use that.