Vào lúc 15:56 2020-09-23, Andy Townsend đã viết:
I'm actually surprised that someone associated with the OSM US community hasn't created a proof-of-concept "good US road route rendering" variant of the OSM Carto style on a live server that people can use for reference (I'm guessing ongoing server costs wouldn't be huge - a couple of $ a day at one of the cheaper hosters). Of the issues above (1) you can ignore in a proof of concept (or deal with some of the edge cases), (2) isn't an issue if you're just rendering the US and (3) isn't a problem if you can live with downtime at the occasional reload (or have two databases - one live, one available to be reloaded if you can't).
In 2012, Phil Gold and Richard Weait developed a "shield renderer" and set it up on an OSMUS server. [1] The renderer not only eschewed way refs in favor of route relations but also used the network=*, ref=*, and modifier=* keys to choose accurate shields consistent with road signage -- not a small feat for the U.S.
It was something of a proof of concept, apparently taking an approach to processing the relations and generating shields that would've been a nonstarter for the openstreetmap-carto project. The project did get pretty far in terms of supporting not only state-specific shield designs but even plenty of county-specific shield designs and some one-off shields. [2] However, the server isn't maintained. It ran out of disk space, so it hasn't kept up with OSM planet updates.
More recently, Kevin Kenny reimplemented the shield renderer using a more robust approach [3] and has discussed route relation support with the openstreetmap-carto developers. [4]
OSMUS is interested in offering an Americentric renderer replete with shields. If anyone would like to help with the server situation, let's get in touch. Also I'm sure Kevin would welcome any pull requests to his osm-shields project, which would probably be a good starting point for this renderer if we go with Mapnik and raster tiles.
[1] http://elrond.aperiodic.net/shields/ [2] https://bugs.launchpad.net/osm-shields/ [3] https://github.com/kennykb/osm-shields/ [4] https://github.com/gravitystorm/openstreetmap-carto/issues/596 -- [email protected] [email protected] _______________________________________________ Talk-us mailing list [email protected] https://lists.openstreetmap.org/listinfo/talk-us
