Peter Miller wrote: > > On 1 Jun 2010, at 15:39, Chris Hill wrote: > >> Peter Miller wrote: >>> We have created a map layer for Potlatch showing OS Locator names >>> which are not in the nearby OSM data in a nice visual way. >>> >>> Details in our blog post of the subject. >>> http://itoworld.blogspot.com/2010/05/os-locator-validation-mapping-for-uk.html >>> >>> >>> >>> To access the tiles paste the following into the custom layer box >>> in Potlatch (or similar in JOSM). >>> http://tiles.itoworld.com/os_locator/!/!/!.png >>> >>> Note our proposed 'not:name' tag for suppressing errors in OS >>> Locator data. This could be extended to 'not:ref' and 'not:access' >>> etc etc. I hope there is not another convention for blocking tag >>> values that we have overlooked. If there is we will of course >>> adjust our code to accommodate it. >>> >>> there is a 48 hour delay until new data appears on the tiles. Ie, >>> monday edits will appear on wednesday etc. >>> >>> >>> >> >> On a rainy afternoon I took a look at your overlay and I think it is >> potentially very useful. The main issue I guess is this new tag. I >> think "not:*" is imaginative, but it rankles with me somehow. How >> about just putting source:name=survey on roads that contradict OS >> Locator to show they have been checked on the ground. > > I was envisaging a technical development where the server would refuse > to accept tag values that contradicted a not: tag, or possibly it was > PotLatch that did so for it. To override the block one could of course > delete the tag, but in time the removal of 'not' tags might be > patrolled from the minutely diffs. I think that is probably a step too far.
[...] > For our more limited purposes we need a clear message in the data that > means 'don't keep on highlighting this discrepancy between OSM and OS > Locator' and I think that data belongs in OSM rather than in some ITO DB. > It just feels that the not:* tag is adding data to OSM to placate a lint tool, rather than adding geographic data to the database. Surely the way to do it is to add to your OS Locator data to stop your lint tool reporting the error, rather than adding the not:* tag to OSM? Still an interesting tool. Cheers, Chris _______________________________________________ Talk-GB mailing list Talk-GB@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-gb
