[Qgis-user] scale dependend representation?

Andreas Neumann a.neumann at carto.net
Tue Dec 28 13:42:27 PST 2010


Hi Sven,

I think the filter accepts almost everything that SQL accepts - just the 
WHERE part of an SQL query.

The manual doesn't discuss the rule-based renderer in detail. If you 
have something to contribute, please contact the doc/community team.

Andreas

On 12/28/10 2:18 PM, Sven Bauhan wrote:
> Am Dienstag, 28. Dezember 2010 13:15:13 schrieb a.neumann at carto.net:
>>   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.
>>
> Oh that looks great.
>
> Then I have to update the trunk version to get the graphical query builder.
>
> Is there also a description in the manual about how the filter queries have to
> look like?
>
> Thanks,
> Sven
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