Hi Luca,
Yes - you can do that by using the symbol levels. Have a look at the
"Advanced" button at the bottom-right of the symbology dialogue.
Things get more complicated if there are bridges and tunnels with other
topics, such as railroads. Then you probably have to split up the layers
in several layers to correctly handle the rendering order.
Andreas
On 15.06.2015 23:18, Luca Galuppini wrote:
dear all, i think this is a simple question but i cant find an answer
googling it...
i am working on the symbolization of a road network downloaded from
OSM, using qgis 2.8.2.
i have a single shapefile, each road segment has attributes (name,
type, bridge, tunnel etc...)
i have symbolized it using "categorized" symbols by "type" column
(major roads are thicker and in different color etc...)
all roads have black outlines, and they all blend together as i worked
on the symbol levels to obtain that
the problem is that i would NOT like the roads to blend as they do in
crossroads, when they are not crossroads: ie when there is a bridge or
underpass and the roads dont actually join.
i think i can do it using the bridge value. in other words i have to
instruct qgis to do the following:
- if "bridge" value is "1" road should be represented on the top of
the intersecting roads bearing value "0"
- if crossing roads have the same bridge value, they should join (it
is a crossroad)
is there a way to obtain it??? style rules can help? and how?
thank you
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