Hi,

I have a few questions when using LinePatternSymbolizer. I'm trying to
use this to draw airspace areas using mapnik. See the results here:
http://openaviationmap.tyrell.hu/

or here: http://openaviationmap.tyrell.hu/image.png

as one looks at the results, there are a few things to note:

- the beginning / end of a polygon is not nice, the image extends
through the poligon itself. how can this issue be solved?

- sometimes the the lines are 'broken', as if some parts of them are missing

- I tried to create circles by creating a polygon that forms a circle.
but the rendered line patterns looks like a maelstrom, where one would
expect straight lines instead

any help would be appreciated regarding the above.

the style rule I'm using is simply the following:

    <LinePatternSymbolizer width="20" height="20" type="png"
                           file="&symbols;/danger_area_edge.png"
                           />

the images I use are transparent png images, see here:
http://code.google.com/p/openaviationmap/source/browse/#svn/trunk/var


Akos
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