Render surface=unpaved differently from surface=paved

[openstreetmap-trac]

Reporter: avarab[at]gmail.com
[Submitted to the original trac issue database at 8.46pm, Wednesday, 7th January 2009]

Currently mapnik renders a highway=* with surface=paved exactly like a highway with surface=unpaved. It would be nice to get a visual distinction between the two.

surface=paved should probably be assumed by default.

[openstreetmap-trac]

Author: steve8[at]mdx.ac.uk
[Added to the original trac issue at 9.56pm, Sunday, 11th January 2009]

Could you give an example of a URL so I can have a look and test a tweak?

[openstreetmap-trac]

Author: avarab[at]gmail.com
[Added to the original trac issue at 11.35pm, Sunday, 11th January 2009]

Sure, all of these ways are unpaved but adjacent to paved ways of the same highway type:

• highway=primary paved/unpaved: http://openstreetmap.org/browse/way/8001882
• highway=secondary paved/unpaved: http://openstreetmap.org/browse/way/5066969
• highway=tertiary paved/unpaved: http://openstreetmap.org/browse/way/25319015
• highway=unclassified paved/unpaved: http://openstreetmap.org/browse/way/24557770

Tell me if you need any more examples.

[openstreetmap-trac]

Author: maratu[at]gmail.com
[Added to the original trac issue at 7.51am, Wednesday, 27th May 2009]

What is the current status? I see that there is no rules for paved\unpaved roads in Mapnik Stylesheet.

I suggest to render unpaved roads filled with same color as paved roads, but with dotted border and border color same as "highway=track", and maybe more fat.

[openstreetmap-trac]

Author: pgf
[Added to the original trac issue at 3.43pm, Friday, 11th September 2009]

commenting on Unpaved_roads.png, it's hard to say without seeing an actual map image using that style, so i'll just say that i think the paved/unpaved distinction should be visible at scales where the casing might not be renderable, or discernible. i can't tell whether that proposal satisfies that need or not.

[openstreetmap-trac]

Author: Kevin Atkinson
[Added to the original trac issue at 10.50pm, Saturday, 7th August 2010]

I don't care what style is chosen. But some distinction should be made. I just changed some roads from highway=track to highway=tertiary because they are definitely not tracks, but they are unpaved.

See http://www.openstreetmap.org/browse/way/10194017, and
http://www.openstreetmap.org/?lat=40.5924&lon=-111.5246&zoom=13&layers=M

I'm afraid someone might change these back just so they are rendered differently.

Would a patch to the Mapnik Stylesheet speed this up?

[openstreetmap-trac]

Author: jgc
[Added to the original trac issue at 1.04pm, Saturday, 26th November 2011]

An example of standard Mapnik rendering modified to render surface=unpaved differently from surface=paved, along the lines proposed above, is available, for Haiti, for example at:
http://osm.arkemie.org/haiti/?zoom=17&lat=18.60871&lon=-72.28598&layers=B0

For easy comparison, standard Mapnik rendering can be seen on the same area by switching base layer.

A large proportion of Port-au-Prince peripheral streets is already labeled with a surface tag. This might be only an early indication of the large proportion of unpaved roads globally, especially in less developed countries.

[openstreetmap-trac]

Author: Ldp
[Added to the original trac issue at 6.27pm, Saturday, 26th November 2011]

Looks good, although somewhat busy. One drawback is the ends of roads lacking casing. Did they attempt to handle that?

[openstreetmap-trac]

Author: jgc
[Added to the original trac issue at 6.19pm, Friday, 16th December 2011]

Replying to [comment:9 Ldp]:

One drawback is the ends of roads lacking casing. Did they attempt to handle that?

Sorry Ldp, seeing your comment only now.

Yes, I had tried using round stroke-linecap for the casing layer, but this made it appear continuous - instead of dashed as desired. So solving this would probably be more complex (special treatment for ends of roads?), and maybe not worth it.