Hi Sven
Each rule can also hold a scale range (min/max). You can have multiple
scale ranges per layer.
In your case, one rule would contain the intended scale range and the
filter (like an SQL-WHERE part). In the recent trunk there is also a
graphical query builder now.
The other rule would hold the consequent scale range and a different
filter/SQL-WHERE part.
To enable the rule-based renderer, choose "New Symbology" and then
"rule based renderer". There is a button with a green "plus" to add a
new rule. In the new dialogue you can then define a scale range and the
SQL where part.
Hope this helps?
Andreas
On Tue, 28 Dec 2010 12:39:14 +0100, Sven Bauhan wrote:
Hi,
I am trying to configure a layer, so that it shows different sized
objects
related to the actual scale of the map. I saw that there is the
possibility to
configure a rule based representation. But I could not figure out how
i can be
used to act scale based.
For example I have a layer with airports. When I see the whole layer
I just
want to display the biggest airports. When I zoom into the map the
smaller
airports up to all little heliports shall become visible depending on
the
scale factor.
Can someone tell me how i can configure a scale based representation?
Thanks,
Sven
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