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. There is an equivalent in Wikipedia where one gets a message saying 'an article of that name has already been deleted, please read the discussion before recreating it'. The message here would be 'someone suggested that that was not the right value for the tag, could you check and then try again'. 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. > > I will certainly use your work to check any street that shows up on > 'my patch'. Great stuff. Peter > > Cheers, Chris _______________________________________________ Talk-GB mailing list Talk-GB@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-gb
