[Qgis-user] data defined style with $scale

[Bernhard Ströbl]

Hi Stefan,

agreed, but a data-defined style does not produce a proper legend either 
(at least not in all cases). It will contain lesser items, though.

Bernahrd

Am 19.11.2013 08:51, schrieb Ziegler Stefan:
> Hi Bernard
>
> Thanks. If you have a lot of rules for the same style in different scales you end up with a unreadable legend.
>
> Stefan
>
>
>
>> -----Ursprüngliche Nachricht-----
>> Von: qgis-user-bounces at lists.osgeo.org [mailto:qgis-user-bounces at lists.osgeo.org] Im
>> Auftrag von Bernhard Ströbl
>> Gesendet: Dienstag, 19. November 2013 08:28
>> An: qgis-user at lists.osgeo.org
>> Betreff: Re: [Qgis-user] data defined style with $scale
>>
>> Hi Stefan,
>>
>> neither a solution nor an answer but a workaround:
>> I always use the rule based renderer and set the scale for the rule (I _think_ this may
>> also be faster)
>>
>> Bernhard
>>
>> Am 19.11.2013 07:50, schrieb Ziegler Stefan:
>>> Hi
>>>
>>> I have a question regarding data defined styling. I'm using the $scale parameter to
>> define the line width:
>>>
>>> CASE
>>> WHEN $scale<= 500.0 THEN 1
>>> WHEN ($scale>   500 AND $scale<= 1000) THEN 0.5 END
>>>
>>> I would expect that the line is not drawn with a scale larger than 1000. But it seems
>> the line is still drawn. It even draws the line with an ELSE-statement:
>>>
>>> CASE
>>> WHEN $scale<= 500.0 THEN 1
>>> WHEN ($scale>   500 AND $scale<= 1000) THEN 0.5 ELSE 0.0 END
>>>
>>> It seems that I get my expected result when I use an ELSE value near zero (e.g.
>> 0.0000001).
>>>
>>> Is this on purpose? Or is there an error in my statement?
>>>
>>>
>>> regards
>>> Stefan
>>>
>>> Freundliche Grüsse
>>> Stefan Ziegler
>>> Kantonsgeometer
>>>
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>>> Telefon +41 32 627 75 96
>>> Telefax +41 32 627 75 98
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>>> http://www.so.ch
>>>
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>>
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