[Qgis-user] data defined style with $scale

[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
> >
> > Amt für Geoinformation
> > Amtliche Vermessung
> > Rötistrasse 4
> > 4500 Solothurn
> >
> > Telefon +41 32 627 75 96
> > Telefax +41 32 627 75 98
> > stefan.ziegler at bd.so.ch
> > http://www.so.ch
> >
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> 
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