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JOSM tip for squaring buildings

OpenBrian님이 English로 2014년 5월 16일에 게시함.

We all know about Q in JOSM, which will make the angles in a building 90°. But isn’t it annoying when you have one building, you are adding an adjacent building, and when you square the corners it affects the first building? Here’s a pro-tip. When squaring the second building, select it, then add 2 nodes from the first building into your selection. Then hit Q. It will use the first building as a baseline for the second. Notice 2 nodes are highlighted red.

square building

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2014년 5월 16일 15:39Vincent de Phily님의 의견

Thanks, didn’t know about this one. For the given example I’d have used extrude instead anyway, but I can see other cases where it’ll be usefull.

2014년 5월 16일 15:54ToeBee님의 의견

You can also select multiple ways and use Q on all of them at the same time. Like a row of connected buildings.

2014년 5월 17일 13:48AndiG88님의 의견

For the given example I’d have used extrude instead anyway, but I can see other cases where it’ll be usefull.

Or just the (B)uilding tool.

2014년 5월 17일 14:42OpenBrian님의 의견

I should mention my use case is turning 1 building into n stores.

Extrude doesn’t build a second store. It will just move an edge. Though shift+extrude will leave nodes in place.

The building tool drops extra nodes, i.e. it doesn’t join them on adjacent areas.

The terracing plugin works very well. The problem with the terracing plugin is it assumes all “stores” in a building are the same width and it’s hard to adjust that.

I also like the “Split Object” function which belongs to utilsplugins2, iirc.

2014년 5월 17일 23:31Vincent de Phily님의 의견

Alt+extrude will create a second store.

The building tool is great for simple things, but I find that it asumes too much (such as the value of the building tag or the angle of the next building) while not handling L/T-shaped buildings and leaving unshared nodes everywhere. Extrude is less advanced but more versatile.

2014년 5월 18일 03:16AndiG88님의 의견

The building tool drops extra nodes, i.e. it doesn’t join them on adjacent areas.

Yes, it does unless I misunderstood you.

OpenStreetMap Building Tool

OpenStreetMap Building Tool

2014년 5월 20일 13:46Hedaja님의 의견

thats a good tip one problem i allways have with q is that all angles are made 90°. Is there a posibility to exclude certain corners?

2014년 5월 21일 06:58Domiss님의 의견

It is much simpler way to have angles different from 90°. Just press ‘a’ twice when you start drawing. All angles will be alligned to round ones (90°, 60°, 45°, 30°, …), but it is of course still possible to draw other ones. More, there will be guiding lines which helps draw parallel (not only) lines with the same lenght.

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