[Talk-GB] Rebooting the NAPTAN import?

Stuart Grimshaw stuart.grimshaw at gmail.com
Sun Apr 3 14:19:07 BST 2011

On Sat, Apr 2, 2011 at 4:37 PM, Jerry Clough : SK53 on OSM
<SK53_osm at yahoo.co.uk> wrote:
> a) Do not import any NaPTAN data in areas where imports have already taken
> place. Experience shows that detailed survey & correction of NaPTAN data is
> not to be undertaken lightly. IIRC about 10% is wrong. The best data are for
> Hullwhere Chris Hill surveyed the lot. I have done only about 20% of
> Nottingham's NaPTAN stops and have a similar error rate. Unfortunately
> processing NaPTAN alongside primary surveying just didnt prove viable, but
> there are plenty of stops which no longer exist, have moved or dont exist on
> the ground.
> b) Check with any mappers in the area before performing an import. There may
> be good reasons why they have not requested one in the past.
> c) The best approach would be to host current NaPTAN data in a location
> where OSM data can be compared & then mappers could choose to import it.
> Having an application which did this would be way more useful than
> shoehorning NaPTAN data in on its own.

I think this is a great idea Jerry, an app for people to compare what
OSM holds already against what's in the latest version of NAPTAN, the
data we were looking at was a few days old.

What's the maximum area or number of points a tool like this would
normally import? You don't want someone just selecting the whole of
the UK & then importing them.

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