[Talk-scotland] Edinburgh - Belgrave Terrace/Clermiston Terrace

Eric Grosso eric.grosso.os at gmail.com
Tue Oct 6 13:52:45 UTC 2015

Hi Colin,

I don't know Clermiston Road but based on the list of public roads in
Edinburgh provided by the City of Edinburgh Council (
and the 1940s OS map (
here are some thoughts about it:

- the primary road is Clermiston road -- the house numbers for this road
start from St John's Road (west side),

- both "Belgrave Terrace" and "Clermiston Terrace" are on the east side of
the street so rather than using alt_name (which is normally used to add an
alternative name which is used on both side of a street), I'd use name:left
or name:right (depending on the orientation of the road) -- more
information about it here:
http://wiki.openstreetmap.org/wiki/Forward_%26_backward,_left_%26_right and
here: http://wiki.openstreetmap.org/wiki/Key:name -- So basically the road
needs to be split according to these terraces, (remark: in the past, it
wasn't clear what was the best way to tag a road like this, i.e. no
decision was made between the use of "name_left" and "name:left", now it's
clear that it has to be "name:left". Nominatim will work with it as well

- the CEC online atlas is based on the current Ordnance Survey data/map and
as this information is copyrighted, this altas can't be used to map OSM,

- a physical signpost in the middle of a street indicates a street name
inside another street name (the one indicated by the physical signpost at
the beginning and end of this street) or sometimes you have two signposts
to indicate the two names -- but it depends.

Hope it helps.


On 4 October 2015 at 23:10, Chris Fleming <me at chrisfleming.org> wrote:

> On Sun, 4 Oct 2015 at 22:00 Colin Paton <cozzarp at gmail.com> wrote:
>> Hello,
>> This is my first posting to this list, so please let me know if I'm
>> posting inappropriately! This list seems to have been used mainly for event
>> notification - should I post somewhere else for mapping queries?
> No problem posting here.
>> I had cause to go to Belgrave Terrace in Edinburgh, and noticed it wasn't
>> found in the Open Streetmap Nominatim. I had to resort to using another
>> popular online map to find my answer!
>> The tenements at the bottom of Clermiston Road in Edinburgh are
>> signposted "Belgrave Terrace" and the ones further up are signposted
>> "Clermiston Terrace". These names aren't shown on the earlier OS maps I
>> looked at, but are physically sign posted.
>> I tried to fix this in https://www.openstreetmap.org/changeset/34436406
>> but am not quite sure if I have done this correctly.
>> I split Clermiston Road, and added 'alt_name' to the new segments I
>> created. This appears to be how the various parts of "Leith Walk" (Croall
>> place etc) are added.
>> The physical signpost on the road says "Belgrave Terrace" but the City of
>> Edinburgh council atlas appears to show the road as Clermiston Road, but
>> the tenements as Belgrave Terrace.
>> I'm not sure if I've done this correctly - is alt_name correct, or should
>> these be the primary name, to match the street signs?
> I would suggest that if the street sign (and presumably the address you
> were looking for) is Belgrave Terrace then having the primary name as
> Belgrave Terrace and Clermiston Road as the alt-name. The situation on the
> ground is king.
> The only thing to look out for is that often terraces refer to the
> buildings, so the buildings on one side of the road may have be part of
> "Belgrave Terrace" while the other side of the road may still be considered
> as part of Clermiston Road.
>> Finally - I really enjoyed being at SOTM and meeting people - many thanks
>> to all the hard work of the organisers. It's a shame I missed the events
>> today, but as it turns out I was too busy getting lost trying to find
>> unmapped streets!
> Yes it was great to see you, A massive thank you to Tim and Bob for all
> the organising and also to the Sponsors.
> Every time I'm blown away by the quality of the speakers.
> Cheers
> Chris
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