[HOT] Squared buildings

[Jo]

Hi John,

I'm validating tasks with many buildings in it and even though we stressed
on it for the Mapathon, I still find quite a few of them not being made
rectangular.

So I started using this search to find all the buildings with 4 nodes:

building inview nodes:4
Square them all, then search like this:
building parent modified

So you can add all the buildings which have nodes that moved to the todo
list. Then you can use ] quickly to review them and see if it still makes
sense. use 'w' to move their nodes if needed, followed by 'q'. Then ']'
again to move to the next one. This makes it relatively efficient without
losing accuracy. It definitely beats ]q]q]q]q]q] :-)

Then search again using:

building inview nodes:5-

to review the ones with more nodes.

building inview nodes:-9

also works to exclude round buildings.

Jo



2016-04-15 1:23 GMT+02:00 john whelan <jwhelan0112 at gmail.com>:

> >2. Validation - either invalidate or fix.
>
> ​>​
> Step 1 is the preferable route but if people are working on their own or
> the turnout makes one on one assistance impossible, then it should be fixed
> in the validation step.
>
> ​I think less well under half of the mapped tiles in HOT have been
> validated and of those that have I'd say another 20+% wouldn't meet my
> personal standards and 50+% wouldn't meet Jo's.  I admit my personal
> validation standard is aimed more at making sure what is there is
> reasonably correct according to the project instructions.
>
>  So are you suggesting gold standard validation ie JOSM plugin todo list
> and each building is examined carefully before squaring?
>
> Is some form of bulk squaring acceptable?  On the grounds its better than
> nothing?
>
> If the tiles get invalidated who do we expect to come back and fix them?
> Remember 99% of the "unoffical" maperthon mappers will never return.
>
> In the case of projects that have many of these types of buildings which
> may not be attractive to validate should we just ignore the problem and
> hope one day someone will gold plate validate the project.  It may even
> happen.
>
> Remember that validation is voluntary and validators can choose which
> projects to validate on and which to just ignore.
>
> I accept some of the big organised groups probably think they have proper
> training on their organised maperthons and tame validators to map their
> particular projects so for them the problem doesn't exist but think in
> terms of HOT generally, think in terms of the maperthons that take place
> with no experienced mappers.  They exist.
>
> I understand it is not an easy question and there are very different view
> points but I think we need to have the discussion and attempt to reach some
> sort of consensus of how to get the most out of the limited resources we
> have rather than have individual validators make their own pragmatic
> decisions.  One of which is delete them all and remap, its faster.
>
> Cheerio John
>
>
>
>
>
> On 14 April 2016 at 18:33, Clifford Snow <clifford at snowandsnow.us> wrote:
>
>>
>> On Thu, Apr 14, 2016 at 3:16 PM, john whelan <jwhelan0112 at gmail.com>
>> wrote:
>>
>>> So your suggestion on how to deal with the existing poorly mapped
>>> buildings would be?
>>
>>
>> 1. Determine the cause(s) of the poorly mapped buildings. Do we need more
>> helpers in MM mapathons? The last one I did, we had a number of new
>> mappers. Those of us helping were stretched just answering questions. Not
>> being able to spend time going over people work. And yes - we did teach
>> squaring buildings. We also recommended people bring a mouse to the
>> session. One of our team brought extra for people to use and I even lent
>> mine out. Drawing features without a mouse is difficult. We've even
>> suggested to Red Cross that they have a bag of mice to lend during MM
>> events.
>>
>> 2. Validation - either invalidate or fix.
>>
>> Step 1 is the preferable route but if people are working on their own or
>> the turnout makes one on one assistance impossible, then it should be fixed
>> in the validation step.
>>
>> Best,
>> Clifford
>>
>>
>> --
>> @osm_seattle
>> osm_seattle.snowandsnow.us
>> OpenStreetMap: Maps with a human touch
>>
>
>
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>
>
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