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<p>OsmAnd is what made me think of it. I'm using that for directions
a lot now, and it's common these days to give a postcode to plug
into a sat nav, but they frequently don't work in OsmAnd.</p>
<p>I was somewhat surprised that it hadn't already been done, and I
accept all the reasons for not doing it.</p>
<p>I'll look into alternatives.<br>
</p>
<p>Russ</p>
<p><br>
</p>
<div class="moz-cite-prefix">On 02/10/2019 15:52, SK53 wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAELijW-0wtWTMaN-vvUChGucXrdtn=W2A73_W6rsAb8PoBXBxA@mail.gmail.com">
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<div>I really see no point. The data are already present in
Nominatim (albeit perhaps not up-to-date) and search is the
ONLY thing that so-called postcode centroids can help with.
DE24 (Sinfin) was imported long ago, see this <a
href="http://overpass-turbo.eu/s/MNZ" moz-do-not-send="true">overpass
query</a>.</div>
<div><br>
</div>
<div>What can be done is attempt to assign postcodes to streets,
and various incomplete efforts have been made over the years.
Open Data provides full addresses for around 70% of UK
postcodes (principally Companies House, Food Hygiene &
National Register of Social Housing). </div>
<div><br>
</div>
<div>What would be useful is a maintained set of postcode
information based on codepoint open/ONS postcode data/OS
Local. The sorts of things which it would be useful to know
are:<br>
</div>
<ul>
<li>Is the postcode centroid co-located with others (e.g.,
delivery offices, some businesses, blocks of flats)</li>
<li>Can the postcode be unambiguously assigned to a street
& post town?</li>
<li>Is the post code in use or not (ONS is now obviously 8
years old, but still potentially useful). Greg's FHRS
tracker does appear to indicate a degree of churn with
inner-city postcodes (although some of this will be
inadvertent use of more general rather than specific
postcodes by people filling in the FHRS forms)</li>
<li>Is a postcode the sole postcode for that street?</li>
</ul>
<div>Somewhere I have an old CPO table with some of this data
populated. I think Geolytix had summary info associated with
their post code sector shape files as well.</div>
<div><br>
</div>
<div>Adding addr:postcode to streets which have a single
postcode is in my book fine: numerous LAs put this on street
signs (Rushcliffe & Gedling for sure); it's an
intermediate step to adding the addresses to houses Once the
postcodes which obviously belong to a single street are
eliminated it's often easier to work out where the others
belong.</div>
<div><br>
</div>
<div>Note that other than for FHRS we have no good source for
Northern Ireland postcodes at all. Equally assignment of rural
postcodes is quite a bit harder than urban ones. In re-reading
bits of Chris's blog last night I came across a <a
href="https://chris-osm.blogspot.com/2017/03/have-you-moved.html"
moz-do-not-send="true">post of his</a> showing that some
postcodes move huge distances between releases.</div>
<div><br>
</div>
<div>Jerry</div>
<div><br>
</div>
<div>PS. The Sinfin postcodes possibly should be removed as they
were added IIRC before Mike Collinson's discussions with OSGB
about OS Open Data.</div>
</div>
<br>
<div class="gmail_quote">
<div class="gmail_attr" dir="ltr">On Wed, 2 Oct 2019 at 13:44,
Russ Phillips via Talk-GB <<a
href="mailto:talk-gb@openstreetmap.org"
moz-do-not-send="true">talk-gb@openstreetmap.org</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204);border-left-width:1px;border-left-style:solid">
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<p>Hi,</p>
<p>I'm wondering if it would be feasible and advisable to
import the UK postcode data from <a
href="https://wiki.openstreetmap.org/wiki/Ordnance_Survey_OpenData#Code-Point_Open"
target="_blank" moz-do-not-send="true">OS OpenData
Codepoint</a>.</p>
<p>The licence is OSM compatible. My thinking was that we
could create a node for each data point and set the
addr:postcode tag. This would be useful for routing
software like OsmAnd, since it would allow a user to enter
a postcode as a destination.</p>
<p>I'm happy to do the work, but the <a
href="https://wiki.openstreetmap.org/wiki/Import/Guidelines"
target="_blank" moz-do-not-send="true">import guidelines</a>
say that imports should be discussed on the imports@ list
and the appropriate local communities, hence this email.</p>
<p>Russ Phillips</p>
<p><br>
</p>
</div>
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target="_blank" rel="noreferrer" moz-do-not-send="true">https://lists.openstreetmap.org/listinfo/talk-gb</a><br>
</blockquote>
</div>
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