It would make sense for very well-known datasets with a fixed
structure. Potential candidates are national survey datasets that are
widely used or OpenStreetMap data.
In my case, the rendering rules are very specific to my own data
structure. It wouldn't make sense to share them.
Andreas
On Fri, 8 Apr 2011 05:37:52 -0700, Sam Vekemans wrote:
Hi,
Is their a list somewhere which shows all of the rendering rules
which
people are using (the beginings of a standards system)?
Thanks,
Sam
On 4/8/11, Martin Dobias <[email protected]> wrote:
On Fri, Apr 8, 2011 at 11:36 AM, Andreas Neumann
<[email protected]>
wrote:
Hi,
I am trying to better understand the rule based renderer.
Which version is correct?
a) QGIS is rendering all features of the first rule, then the
second rule,
etc, Features of the first rule are rendered first, features of the
second
rule on top of features from the first rule
b) QGIS is rendering each feature on by one and decides which rule
applies.
I hope it is not version b), I hoped it behaves like version a) but
it
behaves a bit odd with my data. For my data it seems like the order
of the
rule has no influence on the rendering order ;-(
Hi Andreas
the rule based renderer uses the b) option: it goes through the
features one by one and applies all matching rules (in the order in
which they appear). Mayeul Kaufmann has done some work in order to
support option a) by implementing support for symbol levels so that
the rendering order can be overridden.
My ultimate goal is to only support the option a) in a way how SLD
specifies it: rules are grouped and these groups are rendered one
after each other.
Regards
Martin
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Andreas Neumann
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8624 Grüt (Gossau ZH)
Switzerland
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