Hi.
Preface: I'll copy this mail to the d...@openstreetmap.org list, too, so please restrict to one list when answering; but I think, this mail deals with dev-issues, too and parts of the discussion might progress better on dev.

I don't see the English descriptions, so I hope to guess the right keys for you. Most issues I list here are missing or obsolete items. Errors (where the map key and the map differ) are marked as ERROR! if you only want to deal with these.
German descriptions in paratheses.
I checked everything up to zoom level 10, afterwards it's difficult as both, map and key get more crowded. So in higher zoom levels I restrict to errors and issues I see by accident.

Btw: What about generating the map key from the stylesheet automatically? Is there any ongoing work on that?


level 0: renders only land and water, but map key contains motorway (Autobahn), trunk (Schnellstraße) and Country? These are not shown up to level 4. borders (Landesgrenzen, sonstige Grenzen) level 1: similar to 0, borders are shown, the other two are "obsolete" in the map key
level 2, 3: missing key for Country labels
level 4: no differentiation between the two, but different border types (countries vs. states)
level 5: missing key for Capitals
level 6: glaciers are missing (but quite prominent e.g. in the Alps). Meaning of the city label changes (compared to lvl5): includes additional big cities.
level 7: national parks are missing, but rendered (light green)
level 8: map shows forests/woods (very prominent), but that's not in the map key level 9: missing key for agricultural landuse (Landwirtschaft in level 10), but prominent in many areas. Rivers missing level 10: Motorway key should contain the shield (as common in "commercial" maps), Airports are missing, restricted areas are missing (the red, diagonal striped areas) level 11: trunks and primary roads are rendered with shields in the map, should be reflected in the map key; motorway links are rendered as small numbers, but not in the map key. Peaks are missing in the map key; nature reserve(?) (rendered as small green NR "icons" on areas) is missing in the map key
level 13: tertiary is missing in the map key



well... on a deeper look the "error" I saw is no error (secondary and tertiary are similar, and I interpreted the secondary map key for a street that was a tertiary in the map, while in that area no secondary is present).

Nevertheless: Anything that counts against generating the map key in general out of the stylesheet? If that would be possible, we could additionally support the opencyclemap, public transport map (afaik both rendered with mapnik, too) and probably even Mapquest, if they support this.

Is there any development on http://svn.openstreetmap.org/applications/rendering/mapnik/legend.py ? Probably that is a good starting point for automatic generation of the map key?

regards
Peter


Am 22.03.2012 14:42, schrieb Steve Chilton:
I produced the images (ages ago).
If there are anomalies in the colours or symbols please let me know as I can 
change them.
They are deliberately a subset of all the possible entities that could be 
included.

Cheers
Steve

Steve Chilton, Learning Support Fellow
Educational Development Manager
Centre for Learning and Teaching Enhancement
Middlesex University
phone: 020 8411 5355
email: ste...@mdx.ac.uk
Profile: http://www.middlesex.wikispaces.net/user/view/steve8

Chair of the Society of Cartographers: http://www.soc.org.uk/
Chair of ICA Neocartography Commission: http://www.soc.org.uk/neocartography/


-----Original Message-----
From: Tom Hughes [mailto:t...@compton.nu]
Sent: 22 March 2012 13:37
To: Peter Wendorff
Cc: talk@openstreetmap.org
Subject: Re: [OSM-talk] Map key on osm.org

On 22/03/12 13:23, Peter Wendorff wrote:

How is the map key (german: Legende) generated on osm.org?
It looks like it is out of sync for the mapnik rendering (viewing from
Germany, description texts are in german).
- some items are not matching between map key and map
- many items rendered in the map are not reflected in the map key

Has this e.g. to be generated for an updated mapnik stylesheet?
It's completely manual - at some point somebody gave me a load of images
and text and I build a key from them.

Tom



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