[OSM-talk] Up-to-Date, Minutely Mapnik Bookmarklet

Jon Burgess jburgess777 at googlemail.com
Thu Jan 22 14:52:12 GMT 2009

2009/1/22 Christopher Schmidt <crschmidt at metacarta.com>:
> On Thu, Jan 22, 2009 at 02:42:43PM +0100, "Marc Schütz" wrote:
>> > After a recent spate of OSM activity, especially with regards to
>> > rendering and so on, I've put together a bookmarklet designed to help
>> > visualize changes to OSM data in Mapnik more rapidly.
>> >
>> > http://labs.metacarta.com/osm/up-to-date/
>> >
>> > "Using osmosis, osm2pgsql, and Mapnik, a bookmarklet which will draw the
>> > 'current' state of the database, delayed by less than 10 minutes. Simply
>> > press this button, and an image will be drawn over the map showing the
>> > current state of the database."
>> >
>> > You simply drag the bookmarklet to your browser bookmarks toolbar, and
>> > click it on any OSM map: InformationFreeway, main map, /browse/ pages,
>> > etc.
>> >
>> > I believe that all the kinks of this particular service have been
>> > worked out at this point, though I'm happy to take any feedback or
>> > criticism you have. (Please CC me on any important feedback.)
>> Great work!
>> However, the rendering rules seem to be different. For example:
>> http://www.openstreetmap.org/?lat=49.9008&lon=10.89623&zoom=17&layers=B000TFTF
>> The street "Klosterstraße" has the additional name "Main-Radweg" of a cycleroute relation of which it is a member.
> The osm.xml files are largely the same (I think I'm out of date by a
> couple commits, but they're the same other than that). I'm using the
> default.style that ships with osm2pgsql, so maybe this is doing
> something different than the main site.
> The only other possibility that I'm not entirely sure of the likelihood
> of is that diff parsing has messed up this relation in some way.
> Anyway, thanks for the feedback; I have no immediate suggestions on a
> possible reason for this behavior.

The osm2pgsql on the main site has a small tweak so that it does not
process any route relations. This was implemented a few months back
when people objected to these routes being shown.


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