[OSM-dev] Label font scaling

Stephan Knauss osm at stephans-server.de
Fri May 31 16:14:46 UTC 2013


I have increased the font size on thaimap.osm-tools.org as well. I did this by replacing the font sizes by xml entities and adjusting these. 

As it seems to be useful for others as well I could submit it to svn. 

If nobody disagrees I can submit it on Sunday. 

Stephan 



"Lynn W. Deffenbaugh (Mr)" <ldeffenb at homeside.to> schrieb:

>I'm running my own Tile Server (mod_tile/renderd created from packages 
>as described at 
>http://switch2osm.org/serving-tiles/building-a-tile-server-from-packages/
>and 
>would like to serve up a new set of tiles with larger font sizes for 
>higher resolution displays.
>
>I read 
>https://help.openstreetmap.org/questions/8467/font-size-and-adding-scale-to-map
>
>which describes the textsymbolizer element in osm.xml, to whit:
>
>> <https://help.openstreetmap.org/vote/8472/up/>
>> 3
>> <https://help.openstreetmap.org/vote/8472/down/>
>> 	
>>
>> The font size comes from the style file /osm.xml/. This includes 
>> several lines on the form "/|<textsymbolizer name="name" 
>> fontset_name="bold-fonts" size="11"/>|/". You can edit the /size/ 
>> parameter in the wanted areas to generate a new style with other font
>
>> sizes.
>>
>
>But there's a TON of textsymbolizer's that would need to be edited. 
>Cloudmade's tile servers support an embedded doubler in their tile URL 
>as described at
>http://developers.cloudmade.com/projects/tiles/documents
>
>> To get double resolution tiles use *@2x* suffix: 997 at 2x - this will 
>> improve map look for iPhone 4, Motorola Milestone, etc.
>
>Does anyone know how they do that?  Is there a way to replace the 
>textsymbolizer element size attributes with a variable (say Size11, 
>Size8, SizeN) so that I can simply clone the style and edit all of the 
>sizes in a single place?  Then I could do a 1.5, 2, 4, or whatever by 
>simply editing the sizes where the variables are declared instead of 
>every single textsymbolizer element.
>
>Any/all help would be appreciated to accomplish label font scaling in 
>the rendering chain with minimal manual editing work for each scale
>that 
>I support.
>
>Lynn (D) - KJ4ERJ - Author of APRSISCE for Windows Mobile and Win32
>
>
>
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>
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