Re: [Talk-transit] [Talk-gb-westmidlands] NaPTAN merge tool

2009-04-03 Thread Brian Prangle
I agree that this makes sense  - the only change I would want is for the
green (i.e completed) status to also require the presence of shelter=yes/no
i.e presence of shelter key regardless of value

2009/4/3 Andy Robinson (blackadder-lists) ajrli...@googlemail.com

 Christoph,

 http://www.mappa-mercia.org/cgi-bin/naptanmerger.wsgi/ Looking good :-)

 A few comments on how this might work. Suggestions only for you to think
 about and to elicit comments from others.

 Green would show a stop that's got merged data, i.e. it's a done deal and
 no
 further work is required. To flag this as green you would check for:

 highway=bus_stop
 The presence of the naptan:atcoCode key
 naptan:unverified=yes tag is no longer present
 route_ref tag is present

 Orange would be one step down where one or more of the above are false
 except for the following specific cases:

 Yellow (or some other colour) would be a NaPTAN imported node which
 contains:
 no highway=bus_stop tag
 The presence of the naptan:atcoCode key
 naptan:unverified=yes tag is still present

 Blue (or some other colour) would be a node which has highway=bus_stop but
 no naptan tags indicating that its OSM suryeyed data alone.

 Red, to denote a naptan node that has no physical presence on the ground
 and
 no known use as a bus stop. This would be a node containing:

 no highway=bus_stop tag
 naptan tags present
 physically_present=no tag present

 Thoughts?

 Cheers

 Andy


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[Talk-transit] GPS traces in Central Birmingham

2009-04-03 Thread Brian Prangle
Hi Peter

The relative absence is mainly down to experience that the traces were so
unreliable as to be only a guide and a lot of streets are estimations only.
I tried using a compass to get bearings but standing in the middle of a road
with a compass causes a lot of disturbance so I desisted. Perhaps being on
the top deck of a double decker reduces the bouncing effect of the GPS
signal from the surrounding buildings.

Regards

Brian
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Re: [Talk-transit] NaPTAN import

2009-04-03 Thread Thomas Wood
2009/4/3 Brian Prangle bpran...@googlemail.com:
 Hi Thomas

 From our west mids meeting last night  a number of requests and queries came
 up

 1.Can you import Wolverhampton - the guys up there are ready to have a crack

Ok, done.

 2. Coventry will not be far behind but hold off until we've checked with the
 major contributors there
 3. We'd like to see the NaPTAN fields LocalityName and Bearing imported

This is an NPTG field, none of the NPTG stuff has been looked at yet.

 4. We're not sure if stoptypes CUS, TXR STR BCQ and BCS have been imported

CUS are in, but not tagged in data, there's no TXR or STR in the West
Mids dataset, BCQ, BCS are in, but not tagged as such since they're
essentially the same as BCT for our purposes.

 5. We're not sure if your local_ref field is working correctly
 -essentially  it's just repeating the naptan:Indicator field

It's a filtered version of the Indicator field, where a reference can
be pulled from it intelligibly.

 I'll be writing a short set of guidelines and also a summary of what we've
 found for the import wiki page - to be published shortly

 As a group we've decided to rely on our gps surveys of where bus stops are
 and move the NaPTAN data to that location for merger with our data. The
 feeling is that earlier bus stop surveys need to be repeated much more
 precisely - examining some of our earlier data suggest we weren't as
 accurate as we needed to be.

 Christophe seems to be making good progress with the visual verify/merge
 tool.

 Peter - we're very keen to get our hands on aerial imagery - what needs to
 happen to get this under way?

 Regards

 Brian




-- 
Regards,
Thomas Wood
(Edgemaster)

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