[HOT] Squared buildings

[Jo]

There is the possibility of doing the following:

Search using:
Ctrl-f
building inview type:way nodes:-8

Now you have only buildings selected. (excluding buildings with more than 8
nodes, which are quite likely round buildings)

Add all of the buildings to the to do list.

Press
q

Now they're all rectangular.

Use zoom in the todo pane to jump to the first building.
Now press

]

to mark it done and jump to the next one.

If there is a problem, use

w

to improve 'way accuracy'. It works very well for buildings too.

use

q

to square the building after moving the nodes to the corners.

You can also use

x

to extrude sides (on condition the buildings are rectangular)

When in extrude mode, you can double click on the side (wall) of the
building to add nodes.

This method works very conveniently. If the buildings were drawn reasonably
well, you end up pressing ]]]]]]]] working your way through the todo list.

If you accidentally squared/flattened a round building, use Edit/Purge to
make JOSM forget about it. It will be removed from your local copy and the
version that is online won't be touched. If you wanted to change something
about it or you simply want to have your dataset complete, you can
redownload the small area where it was, of course.

It all is still more labour intensive than it should be. It would be better
to find a programmer who can fix iD to include a tool comparable to the
buildings-tools (and while they're at it, they can include extrusion as
well, really practical tools). Maybe we should propose this for next year's
GSoC... I have no idea how hard it would be to accomplish this. But all the
algorithms are already in JOSM. No idea if the licenses are compatible
though. I don't have time to go look it up. I'm too busy squaring more
buildings...

Polyglot


2016-04-26 23:30 GMT+02:00 Steffen Lohrey <steffen.lohrey at posteo.de>:

> This sounds dangerous, though, for instances when buildings have
> non-rectangular corners (which in my experience is often the case). Such a
> tool would be an invitation to unwillingly mess up such buildings.
>
>
> On 26/04/2016 17:10, Andrew Wiseman wrote:
>
> Maybe someone could build a tool in JOSM to be able to select an area of
> buildings and square them all at once? Right now you have to individually
> select them and that takes a while, because the Q button won't work if a
> node is also selected. Or maybe tweak the functionality of Q so it ignores
> nodes?
>
> I was just doing this, manually selecting non-square buildings, for an OSM
> exercise in a class I teach, it was very time consuming.
>
> Andrew
>
> On Mon, Apr 25, 2016 at 5:11 PM, John Whelan <jwhelan0112 at gmail.com>
> wrote:
>
>> Perhaps another question to ask then is is it too complex for new mappers
>> to use when mapping buildings?
>>
>> If we can accept odd shaped buildings that aren't quite the right size
>> then fine it is the right tool for the job, but if we want fairly accurate
>> building sizes and square corners on squared buildings so population
>> estimates can be made then it appears from the results we see that it
>> requires more training and a higher standard of mapping than new mappers
>> are capable of with the current levels of training.  In other words it
>> doesn't matter how good a tool it is or what it is capable of if the new
>> mappers don't understand how to use it.
>>
>> And we still haven't really come to a conclusion about whether having
>> squared buildings matters.
>>
>> Cheerio John
>>
>> Paul Norman wrote:
>>
>> It's been stated a few times but since there's still confusion: iD has a
>> button to square features. It has had this feature since before it was
>> released.
>>
>> We need to stop wrongly blaming iD, as it's not productive at figuring
>> out what to change, and where.
>>
>>
>> --
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