[josm-dev] Validator plugin working differently for each projection
Francisco R. Santos
frsantos at gmail.com
Thu Dec 4 11:01:33 GMT 2008
Hi Pieren,
2008/12/3 Pieren <pieren3 at gmail.com>
>
> I need some advice from the experts here to see how we could make the
> validator independant of the projection.
> For instance, I don't know if the grid detail of 10000 was originally
> fixed for EPSG:4326 or Mercator, means if the size of the list should
> be 2 or 52.
> Shall we adapt the grid details for each projection then to have a
> constant size of cells ? Or stop working with east,north ?
>
That grid was used so that a way didn't compare to every other downloaded
way, but only to the nearer ones, and the value of 10000 was found using
heuristics (that is, test&error until most bugs were discovered while
keeping the processing time reasonable).
I'm afraid I didn't understand very well all the implications of projections
(well, I still don't fully understand) and even Lambert projection wasn't
included in JOSM at that time, but maybe it could use different values for
different projections.
Quico
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