I put together the attached diagram for a recent discussion. It might be of some help to someone.
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Martijn van Oosterhout Sent: Thursday, May 29, 2008 5:36 PM To: Brian Peschel Cc: [email protected] Subject: Re: [Mapnik-users] newbie Rules versus Styles clarification On Thu, May 29, 2008 at 9:27 PM, Brian Peschel <[EMAIL PROTECTED]> wrote: > I think I have this right in my head, but I just want to check. > > A Layer can have multiple Styles. > A Style can have multiple Rules. > > When processing a Layer, all Styles that apply (based on the rules) and > drawn. > When processing a Style, the first Rule that applies is used. Actually, I think all rules that match apply. > So, a feature that is at scale of (say) 50000 with the right conditions > based on the filter would be drawn twice. Once with a stroke width of 3 > (the tunnels-casing style) and once with a stroke width of 2 (the > tunnels-fill style). And they will be drawn in the order defined by the > Layer tag? That's about right. Have a nice day, -- Martijn van Oosterhout <[EMAIL PROTECTED]> http://svana.org/kleptog/ _______________________________________________ Mapnik-users mailing list [email protected] https://lists.berlios.de/mailman/listinfo/mapnik-users
mapnikexample.pdf
Description: Adobe PDF document
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