1. White line in the middle won't do - the symbol has to be hollow in the middle.
2. That's very very sad. Maybe there is a workaround with geometry functions? There is a "drop shadow" example where geometry is offset from the original. So can I just offset a river and put a TextSymbolizer with followline in it? 2011/3/30 Andrea Aime <[email protected]> > On Wed, Mar 30, 2011 at 6:18 PM, Gis Mage <[email protected]> wrote: > > Hello! > > > > I'm doing a pretty strict cartographic map. > > 1. How can I create a LineSymbolizer, which will produce two parallel > dash > > lines with 1 px hollow in between? > > Like two same lines with positive and negative offset from centerline by > > 1px. > > You create one large dashed line, black, and a white line in the middle > (assuming the background is white). > > As far as I know it's the only way to get good looking results. > Or you can use a graphics stroke with the base symbol you want and combine > it with dash array, GS 2.1.x will repeat the symbol following the dash > array > as a template. > > > 2. How can I create a TextSymbolizer, which will follow the line and will > > have an offset (be above the line at 2px)? > > Not possible, we don't have the code that computes a proper offset line. > I tried to implement it but it was quite hard, also the JTS main developer > agreed with me that a single side offset with proper bending in the curves > is very hard to implement, not something that can be done in hours > (I actually already threw days at the problem without luck, thought I'm > sure > Martin Davis, the father of JTS, would be able to do it properly) > > Cheers > Andrea > > > -- > ------------------------------------------------------- > Ing. Andrea Aime > GeoSolutions S.A.S. > Tech lead > > Via Poggio alle Viti 1187 > 55054 Massarosa (LU) > Italy > > phone: +39 0584 962313 > fax: +39 0584 962313 > mob: +39 333 8128928 > > http://www.geo-solutions.it > http://geo-solutions.blogspot.com/ > http://www.youtube.com/user/GeoSolutionsIT > http://www.linkedin.com/in/andreaaime > http://twitter.com/geowolf > > ------------------------------------------------------- >
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