<html><head><meta http-equiv="Content-Type" content="text/html charset=iso-8859-1"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Mapnik supports an optional `scale_factor` argument for rendering that enables the 2x scale up (or any variable size) without any modifications to your stylesheet.<div><br></div><div>See documentation at <a href="https://github.com/mapnik/mapnik/wiki/Scale-factor">https://github.com/mapnik/mapnik/wiki/Scale-factor</a></div><div><br></div><div>Dane</div><div><br></div><div> </div><div><div><div>On May 31, 2013, at 8:12 AM, Lynn W. Deffenbaugh (Mr) <<a href="mailto:ldeffenb@homeside.to">ldeffenb@homeside.to</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite">
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I'm running my own Tile Server (mod_tile/renderd created from
packages as described at
<a class="moz-txt-link-freetext" href="http://switch2osm.org/serving-tiles/building-a-tile-server-from-packages/">http://switch2osm.org/serving-tiles/building-a-tile-server-from-packages/</a>
and would like to serve up a new set of tiles with larger font sizes
for higher resolution displays.<br>
<br>
I read
<a class="moz-txt-link-freetext" href="https://help.openstreetmap.org/questions/8467/font-size-and-adding-scale-to-map">https://help.openstreetmap.org/questions/8467/font-size-and-adding-scale-to-map</a>
which describes the textsymbolizer element in osm.xml, to whit:<br>
<br>
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<div class="answer-body"><p>The font size comes from the style file <em>osm.xml</em>.
This includes several lines on the form "<em><code><textsymbolizer
name="name" fontset_name="bold-fonts"
size="11"/></code></em>". You can edit the <em>size</em>
parameter in the wanted areas to generate a new
style with other font sizes.</p>
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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
<a class="moz-txt-link-freetext" href="http://developers.cloudmade.com/projects/tiles/documents">http://developers.cloudmade.com/projects/tiles/documents</a><br>
<br>
<blockquote type="cite">To get double resolution tiles use <strong>@2x</strong>
suffix: 997@2x - this will improve map look for iPhone 4, Motorola
Milestone, etc.</blockquote>
<br>
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.<br>
<br>
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.<br>
<br>
Lynn (D) - KJ4ERJ - Author of APRSISCE for Windows Mobile and Win32<br>
<br>
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