[Talk-GB] Beta release: Address mapping tool

Sat Feb 12 16:28:19 UTC 2022

Hi Peter,

No, this behaviour in the tool is not intentional and I can only apologise
for it. I'm not sure what has caused it as the tool was working as expected
when I tested it but I am also getting the same issues (as is Tom who I
replied to a few minutes ago). I'm hoping that Pieter (the developer of
MapComplete) has some free time to look into this and why it has stopped
working as expected.

Sorry about this and thanks for your patience :-)

Thanks,
*Rob*

On Sat, 12 Feb 2022 at 16:21, Peter Neale <nealepb at yahoo.co.uk> wrote:

> Hi Rob,
>
> This looks like a very useful tool.  (Far beyond my capabilities to
> produce something like this.)
>
> I had a quick look at an area near my home, where I have added addresses
> and was surprised to see some houses with both a number label (indicating
> that it was tagged with an address) and also a "?" label (indicating that
> an address was still needed. )
>
> E.g.  2 Kingsoe Leys  https://www.openstreetmap.org/way/623808668, which
> I am seeing in your new tool at:
> https://pietervdvn.github.io/mc/develop/uk_addresses.html?test=true&z=20&lat=52.04211&lon=-0.69857&filter-to_handle=true&language=en
>
> Workflow:  I have tried editing the addresses of a couple of nearby
> houses.  Having got to the "Review and Edit" stage, I had expected a "Yes"
> / "OK" / "Go" button, but it seemed that closing the window was the only
> option - and it seemed to work.  Is this the intended behavioiur?
>
> Regards,
> Peter
> (aka PeterPan99)
>
>
> On Friday, 11 February 2022, 22:44:57 GMT, Rob Nickerson <
> rob.j.nickerson at gmail.com> wrote:
>
>
> Hi all,
>
> As previously discussed OSM UK has been working on a new way of mapping
> addresses. We're at a stage where we are ready to share this and ask for
> feedback. My thanks to Russ and Pieter for the development work and the
> many people who have provided support and advice since we came up with this
> idea 12 months ago.
>
> First a recap: The new tool makes use of openly licensed datasets in order
> to predict where an addressable point is. To do this we take OS generalised
> buildings and land ownership (Cadastral) parcels. The land parcels are used
> to split the generalised buildings (e.g split semi-detached houses into
> their two parts) and the centre of these split buildings become our
> predicted locations for addresses. These are then compared to the existing
> data in OpenStreetMap. We check for cases where the point falls within a
> building way in OSM, and when OSM already has an address within the
> Cadastral parcel. All of this is then presented in the user interface (we
> are using MapComplete as it works across desktop and mobile). Contributors
> can then add the address following a ground survey.
>
> With that in mind here is the link to the demo tool (in test mode so no
> data is written to OSM):
>
> https://pietervdvn.github.io/mc/develop/uk_addresses.html?test=true&z=7&lat=52.92215&lon=-1.87866&filter-to_handle=true&language=en&welcome-control-toggle=true#welcome
>
> A few initial observations:
>
>    1. As it is in test mode, you see some developer debug (e.g. the code
>    names for each block in the questions popup). Please ignore this as it
>    won't appear in the final version.
>    2. It can get slow if it tries to load too much data. If this is the
>    case I find refreshing the page at a fully zoomed in position works well.
>    3. Currently when you try to import a point you get the option to move
>    the location. As the data is coming from OS and the cadastral parcels this
>    doesn't make sense. I'm hoping we can get rid of the screen that allows you
>    to move the point.
>    4. A ref:GB:uprn tag is added if only one UPRN is found within a
>    cadastral parcel.
>    5. A uprn_count tag is also added. I personally find this useful as it
>    is a good indicator of how many addresses a point covers, therefore giving
>    a good piece of info to support QA checks. It also can help interpret if
>    something like house number "1-6" is six addresses or three (if just odd or
>    even numbers). Keen to get feedback on this proposed tag.
>    6. There may be some points proposed that are not actually addressable
>    locations. Currently you should just ignore these but another option is
>    that we have a button to say "Not an address". We could then ask what it is
>    and add a noaddress=yes and fixme= tag to OSM. Again feedback on this idea
>    is welcomed.
>    7. Due to the approach we selected, it does not always offer an
>    address point. This is particularly true in city centres and areas with
>    social housing. It comes from the lack of Cadastral parcels. We previously
>    discounted the raw UPRN data as our source of address locations (due to too
>    much noise) so there is not much we can do about this. You can pre-add a
>    partial addr:* point to OSM (e.g. addr:street) in another map editor and
>    then add the rest of the address using this tool.
>    8. It is not yet possible to add a completely new point that is not in
>    the pre-processed data. I am curious as to whether this functionality
>    should be added or not given that the aim is to share this tool with people
>    completely new to OSM.
>
>
> Finally, for those of a more technical nature, the datasets I described in
> the recap section are available as tiled GeoJSONs and MVT tiles. You can
> then use these in other places should you wish. For example the MVT can be
> added to JOSM (Imagery -> Imagery Preferences... -> Click "+MVT" button ->
> paste in https://osm-uk-addresses.russss.dev/addresses/{z}/{x}/{y}.mvt
> and add a maxzoom=21). Being a MVT layer, you can right click the layer
> name in the Layers side-panel and click "Convert to OSM data" to access it.
> Don't upload the whole thing; instead carefully pick features that you want
> to use for a ground survey / manual inspection.
>
> I look forward to hearing your feedback on this. The aim is to then get
> this in the hands of people completely new to mapping so that we can speed
> up the address mapping task.
>
> Thank you
> *Rob*
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