[Talk-GB] RFC: Semi Automatic Import of schools

Thu Jun 9 19:50:14 UTC 2016

OK I rolled out the new version, can you take another look?

Thanks again for your detailed and helpful comments.

On 9 June 2016 at 15:40, Robert Whittaker (OSM lists)
<robert.whittaker+osm at gmail.com> wrote:
> On 9 June 2016 at 10:50, Christian Ledermann
> <christian.ledermann at gmail.com> wrote:
>> I'd like to propose to use http://schools.mapthe.uk for a semi automatic import
>> of Ordonance Survey Open School grounds data combined with
>> edubase and seed data into OpenStreetMap.
>>
>> The Tool is available at http://schools.mapthe.uk/
>> The sourcecode and documentation is available at
>> https://github.com/cleder/os-opendata-edubase
>>
>> My tests with this tool are very encouraging, I'd like to go forward
>> to the imports mailing list with this proposal.
>
> I have a quick look at your tool, but I'm afraid the instances I was
> presented with initially left me rather confused about exactly what it
> is doing and where the data is coming from. (I didn't read the github
> readme to start with, as that looked from the start to be instructions
> for installing the app yourself, rather than how to use it.) I think
> that basic info should be provided on the page itself so users don't
> have to go elsewhere to find  out what is what. It would also be good
> to have a better description of how things are selected / matched up
> between the datasets. In particular, is the tool trying to go through
> all school polygons in OS Open Map, or just those matched to an
> Edubase entry that doesn't have an existing ref:edubase match in OSM?
> Are you just matching / showing things based on proximity to the
> current OS Open Map polygon?
>
> The first few things I was shown were as follows:
>
> * http://schools.mapthe.uk/assign/22701/ -- The blue polygon seems to
> be for a churchyard, not a school. Why/how was is chosen / matched? Is
> it an error in OS Open Map perhaps?
>
> * http://schools.mapthe.uk/assign/22591/ -- There's a school name but
> no other data shown. Is this because there are no nearby edubase
> entries? (It would be helpful if the page says so.) This might not
> mean the site is not/no longer a school though, as it could be a
> satellite site for a school with a main address elsewhere.
>
> * http://schools.mapthe.uk/assign/5733/ -- The red area is an existing
> OSM polygon, but this isn't made clear on the page. Also could the
> full set of tags be shown in the section at the bottom, ideally as a
> table?
>
> A few other comments / suggestions:
>
> * It would also be helpful if you could explicitly list the source
> data items their key data explicitly on your page view (as you already
> partially do with the OSM data) and also provide clickable links to
> the OSM object (e.g. http://www.openstreetmap.org/way/148997325) and
> full Edubase entry (e.g.
> http://www.education.gov.uk/edubase/establishment/summary.xhtml?urn=111777)
> to allow people to inspect them.
>
> * In the case where you think an OSM object already exists, could
> there be a button to add/replace the existing tags with the data you
> think is appropriate (ideally with an option to overwrite or preserve
> each existing tag that clashes)? Any maybe an option to completely
> replace/update the geometry too -- though this is a bit dangerous, as
> you'd have to be careful with what to do with the original nodes in
> case they were also being used for other things.
>
> * I don't think "os-open" is a suitable source tag if it's supposed to
> be referring to OS Open Map Local. Using something approximating the
> full name would be better as it is less ambiguous. "os-open" could be
> mistaken for a general tag referring to any of the OS OpenData
> products.
>
> * The tags to be added would be easier to read if they were presented
> as separate rows in a table.
>
> * Could the map layer switcher be shown open all the time? Before
> adding a polygon, one should really check the Satellite view, so this
> would save a click each time.
>
> * The height of the map view is annoying small on my large monitor.
>
> * Are you looking for OSM nodes and relations as well as ways? (e.g.
> at http://schools.mapthe.uk/assign/26893/ there's an existing node
> that doesn't seem to be detected.)
>
> * When there's no OSM data, the forwards and backwards links look like
> they're in a box with a title "Openstreetmap Data", when they're
> actually nothing to do with any OSM data. If there's no OSM data to
> display, then you should either have some placeholder text to say so,
> or omit the heading.
>
> * The telephone numbers (phone=*) aren't in the international format
> specified at http://wiki.openstreetmap.org/wiki/Key:phone .
>
> Finally, from the few polygons I've looked at, they're not always that
> accurate. In more than 50% of cases, I think I would want to do better
> drawing it manually over the satellite imagery. I'm not convinced that
> providing a tool that encourages / makes it easy for people to add
> lower quality data is necessarily a good thing. Perhaps we need to
> assess the accuracy of these polygons more carefully before
> proceeding.
>
> I hope some of this is useful...
>
> Robert.
>
> --
> Robert Whittaker
> http://robert.mathmos.net/osm/
>
> _______________________________________________
> Talk-GB mailing list
> Talk-GB at openstreetmap.org
> https://lists.openstreetmap.org/listinfo/talk-gb

-- 
Best Regards,

Christian Ledermann

Newark-on-Trent - UK
Mobile : +44 7474997517

https://uk.linkedin.com/in/christianledermann
https://github.com/cleder/

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