Lines are rendered too long or too short

Question

Lines are rendered too long or too short

rurseekatze opened this issue 8 years ago · comments

Alexander Matheisen commented 8 years ago

There are some strange rendering results at this tile: http://tiles.openrailwaymap.org/standard/18/138997/90723.png

Sometimes there are gaps at the switches, sometimes the lines are too long.

Rolf Eike Beer · Answer 1 · Sat Aug 13 2016 20:32:48 GMT+0800 (China Standard Time)

This is in Augsburg.

Rolf Eike Beer · Answer 2 · Sat Aug 13 2016 22:10:57 GMT+0800 (China Standard Time)

Just some intermediate results:

it happens both if the switches are tagged railway=switch or not
looking at the data (at a different location) I see that the switch is indeed part of both lines, so it's no data error

Rolf Eike Beer · Answer 3 · Sat Aug 13 2016 23:33:06 GMT+0800 (China Standard Time)

When looking at the data for this tile I see that not all switches are connected to the lines, that some LineStrings are split even if they are the same way in OSM and so on. The data has not changed for month in OSM, so I guess it's some sort of database processing that introduces these errors. The renderer then works on the damaged data and will just draw the incorrect things, so it is not at fault.