[HOT] A new tool for spotting buildings that overlap by more than 50%

[hnugter]

Hi All,

Does someone know  in JOSM if it's possible to select more than one 
building, lets say a group of buildings and square them at the same time?

Regards
Henk


Op 26-11-2017 om 03:18 schreef Harry Wood:
> It's funny, I was having the same idea recently while using the JOSM 
> validator on "finished" areas of TM projects.
>
> JOSM validator already has a big red error category for duplicate 
> buildings (where there is 100% overlap). This crops up a bit in our 
> finished projects, but it shouldn't really. It's a clear data error. 
> We should always fix duplicate buildings. ....So I start by fixing them.
>
> Then there's a JOSM warning called "crossing buildings". Again this is 
> always a data error actually, and ideally we'd fix all of these, but 
> these are very common in our finished tasks. Every case where a 
> neighbouring building is drawn over the top of the other, even ever so 
> slightly. (Often we see buildings up against each other in the 
> imagery. To be purely strictly correct, these should be mapped as ways 
> sharing nodes, but it's understandable that folks don't always get 
> that quite right, and it doesn't actually matter that much).  I 
> sometimes spend ages fixing all the "crossing buildings" warnings, but...
>
> ...among these there are some cases which are more important to fix, 
> where buildings are actually a kind of duplicate, but not 100% 
> matching. The same building drawn in twice by two different people 
> (probably due to mapping at around the same time).
>
> So I've just been trying this script by first fixing the 100% 
> duplicates using the normal JOSM validator error, then next selecting 
> these cases using the script. It works! But it's a bit fiddly to 
> set-up and use. I was imaging this kind of logic, but as a refinement 
> to the JOSM validator itself. Under the "crossing buildings" warning 
> list it could show the major/minor types of crossing buildings.
>
> Harry
>
>
> ------------------------------------------------------------------------
> *From:* john whelan <jwhelan0112 at gmail.com>
> *To:* "hot at openstreetmap.org" <hot at openstreetmap.org>
> *Sent:* Friday, 24 November 2017, 22:50
> *Subject:* [HOT] A new tool for spotting buildings that overlap by 
> more than 50%
>
>
> Mike Thompson was kind enough to build me a JOSM script.
>
> https://github.com/MikeTho16/ JOSM-Scripts 
> <https://github.com/MikeTho16/JOSM-Scripts>
> SelectDuplicateBuildings.js
>
> To Run:
> * Install JOSM's Scripting Plugin
> * Place above file in a convenient location on your system
> * Click "Scripting" (on top menu bar)
> * Click "Run"
> * Click "..." button and select this file.
> * Click "Run"
>
> Selects duplicate, or near duplicate, area buildings in JOSM's active 
> data layer. A "near duplicate" is a building whose bounding box 
> overlaps another building's bounding box by more than 50% (I couldn't 
> get a pure area compare to work).  Only the first building encountered 
> of an overlapping pair is selected. The selected buildings are added 
> to the current selection.
>
> Note clear the selection first then use the todo plugin to go through 
> the duplicated buildings.
>
> Cheerio John
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