Hi Christopher, (inline) On 24 March 2010 15:50, Christopher Stevens <[email protected]> wrote: > Dane, thanks for feedback. After setting tilecache aside and going through > the getting started guide at http://trac.mapnik.org/wiki/XMLGettingStarted > step by step, I was was able to produce a great population map with colors, > text, etc. For my PC, I had to tweak the shapefile names from > "TM_WORLD_BORDERS_SIMPL_0.3" to "TM_WORLD_BORDERS_SIMPL-0_3" (note missing > '.', and "-" instead of "_") to make it work with the example XML, but it > works!
Great, glad it works. > > Back to my original issue, here's some troublesome sample XML (simplified, > and for all zoom levels I think but still having the same issue): > > <Map bgcolor="#00264c" srs="+proj=latlong +datum=WGS84"> > <Style name="point style 7"> > <Rule> > <Filter>[zoom] >= 0</Filter> > <PointSymbolizer file="./images/sys10-3px.png" height="3" > type="png" width="3" /> > </Rule> > </Style> > <Layer name="layer 8" srs="+proj=latlong +datum=WGS84" status="on"> > <StyleName>point style 7</StyleName> > <Datasource> > <Parameter name="type">shape</Parameter> > <Parameter name="file">./solarSystemsLayer</Parameter> > </Datasource> > </Layer> > </Map> > > As is, I get a blank blue image. If I remove the following line, I get my > dots on an image: > <Filter>[zoom] >= 0</Filter> > > This is when viewing through tilecache. Is there an argument I can pass in a > python script to test out zoom levels? Does zoom level specific data need to > be in the shapefile itself (guessing no)? Am I using wrongly formatted code? > Zoom data need to come from somewhere, so yes, you need a "zoom" attribute in your shapefile. In mapnik2 we're planing to provide some internal renderer state as properties (for using in expressions), but still [zoom] is something specific to your use-case, mapnik doesn't know about it. Regards, Artem > Chris > > On Mon, Mar 22, 2010 at 7:15 PM, Dane Springmeyer <[email protected]> > wrote: >> >> Chris. Thoughts below inline. >> >> --- \o/ --- >> Sent from my phone >> >> On Mar 22, 2010, at 7:08 AM, Christopher Stevens <[email protected]> >> wrote: >> >>> Howdy, >>> I have mapnik set up in Windows XP, and have had great success creating >>> and delivering tiles using tilecache...until I add filters. >> >> For what kind of datasource and what do your filters look like? It's >> always good to paste some XML so we can do something more than guess. >> >>> Lines in my XML containing filters are ignored with no visible errors >>> that I see. >> >> Just means they are not matching. Note that shapefile field names are case >> sensitive. >> >>> >>> With the world population mapnik example, this is the same case. I see >>> all-red filled countries, with no labels. >> >> Didn't you have this working at some point? Have you made any changes to >> it? Are you sure you are using the right shapefile? It is the one from >> thematiccmapping blog that actually has the right attributes to work with >> that demo. >> >>> Initial searching suggests I may be missing some libraries (I don't have >>> libcurl installed yet for Python 2.5). Could I trouble someone to confirm >>> this, and could I be missing additional libraries/packages? >> >> Highly unlikely you are missing anything. Just check you shapefile and >> xml syntax. >> >>> Thanks much in advance. >>> >>> Chris >>> _______________________________________________ >>> Mapnik-users mailing list >>> [email protected] >>> https://lists.berlios.de/mailman/listinfo/mapnik-users > > > > _______________________________________________ > Mapnik-users mailing list > [email protected] > https://lists.berlios.de/mailman/listinfo/mapnik-users > > _______________________________________________ Mapnik-users mailing list [email protected] https://lists.berlios.de/mailman/listinfo/mapnik-users
