Osmarender/Development

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Bug / Wish trac'er

  • Open bugs and wishes
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Bezier Curves

In OSM all roads are represented as a series of straight lines between points. To create smooth roads in the map bezier curves could be used. This is currently in discussion.

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Label Fitting

Osmarender lacks the ability to intelligently decide which street name labels to show or not. This could be improved by a pre- or post-processing step.

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Path Sorting

A pre-processor, called Frollo, is available which will sort the segments in ways and annotate the .osm file with hints that Osmarender can use to better process the data.

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Generating Localized maps

Osmarender and other renderers do not have a built in method to select in which language to render the map. A work-around can be seen at Localized maps with Osmarender‎.

A more sophisticated method, but one that does not seem to work with current versions of osmarender can be seen here.

Bug with railway crossings

Since I couldn't easily find a place to report a bug, I'll just state it here: When encountering roads which also have railway tracks on them, Osmarender apparently sticks railway crossing markers onto each node of the way. See this area for an example. --Mjr 20:57, 8 October 2008 (UTC)

Bug: Oneway arrows in upper layer

Here: [1] A motorway (oneway) is crossed by a bridge. The oneway arrow of the motorway is rendered above the tertiary street over the bridge. --Lulu-Ann 08:33, 16 December 2008 (UTC)

Bug: Large water multipolygons cause flooding

At [2] the city of Kuopio is flooded in Osmarender. The multipolygon data should be correct, and Mapnik and OpenCycleMap are rendering it fine. --Skela 07:31, 18 February 2010 (UTC)

As Saimaa near Kuopio is very complicated, I guess another place would be easier to test a bug fix. A simpler test case for a (similar-looking) multipolygon problem with Osmarender can be seen at http://www.openstreetmap.org/?lat=63.3664&lon=27.967&zoom=13&layers=B000FTF - lake Syväri (east of Varpaisjärvi) outer is divided into two polygons, i.e. two adjacent natural=water areas. Osmarender floods the tile with water. --Jkp 08:20, 3 May 2010 (UTC)

Bug: Multipolygon forest overlays streets

at the moment visible here: [3] A multipolygon-forest seems to overlay a street by default, therefore you cannot see a street going trough such a forest.

Bug: Micromapped embankments are not Micromapped

At the moment visible here: [4] An irrigation canal on a wide embankment was micromapped using the oneway tag. Osmarender is showing embankment on both sides of the embankment's border.

Proposal: Temporary tags

Osmarender/Proposal Temporary Tags --Mueck 13:18, 30 January 2009 (UTC)

Proposal: Much nicer fill colors

Mapnik uses rather nice fill colors. Osmarender has a lot of catching up to do in this regard. I humbly suggest that any and all Osmarender devs please spend some quality time at the ColorBrewer "color advice for maps" website: http://colorbrewer2.org I would guess that the site authors might also be be approached about providing a bit of pro bono help considering the high importance and profile of OSM.