Many classical buildings and gardens have been designed using a strict (and sometimes complicated) grid. While the lines themselves are of course not visible, they are very clearly there. For example the footpaths in a park, or the many parts of a building, are evenly spaced and nicely aligned. Is it ok to draw these "invisible" guidelines in the map? Of course they should not be rendered in the normal map view, but they help in aligning features properly, also with later edits. asked 05 Jul '17, 19:26  pbb |
2 Answers:
You should only put things into OSM which are physically there (with a small number of exceptions). If there are actual footpaths, then map them. But if it's not a real thing that's not really there, then it probably doesn't belong in OSM. Do you have an example or photo of the thing you're talking about so we can understand more clearly what you mean? answered 05 Jul '17, 19:32  rorym |
I have drawn construction lines and left them in the data for a few days either to show other mappers or until i was happy with results. Here is a example where i used them:-https://help.openstreetmap.org/questions/50366/mapping-without-access-or-new-enough-bing answered 06 Jul '17, 08:05  andy mackey |
Where guidelines exist, I tend to draw them but delete them before uploading (so that they never get into OSM, but can be used).
One nice example is this garden which is made up of many parallel and perpendicular lines on regular distances: https://www.mapillary.com/map/im/K-aehYlDhrEny2ABVuNIiw