[Qgis-user] Multiple Symbolization Rules per Layer

[Andreas Neumann]

Hi Agus,

while I agree that your suggestion makes sense and would help for many
purposes, in my case it wouldn't help.

What I wanted to do is to style line elements according to three different
attributes. In my case I have to handle the waste-water network.

* Attribute Utility should define the line-color
* Attribute accuracy should define stroke-dashing
* Attribute hierarchical_function should define stroke-width

You cannot solve this problem through multiple loading of the same layer.
The only current way is by concatenating the three attributes into a
single attribute and than style all the combinations. Of course this can
be quite a lot of work and not very elegant if you have a lot of
combinations. If you have three distinct values for every attribute, you
already have 27 different cases to handle.

Andreas


On Wed, April 22, 2009 8:43 am, Agustin Lobo wrote:
> I think this would be solved by item 30 in
> http://sites.google.com/site/eospansite/myqgiswishlist
> ?
> Just to make sure I don't have to add another item to the list
>
> Agus
>
> Andreas Neumann wrote:
>> Hi,
>>
>> I have to symbolize our community's waste water network. My problem is
>> that I need more than one symbolization rules per Layer.
>>
>> As an example the stroke should be derived from one attribute while the
>> stroke-style (e.g. different stroke-dashing) should be derived from a
>> different attribute. This means I would need more than one symbolization
>> rule to correctly style this layer.
>>
>> Is this possible with QGIS or would I need to create a new attribute
>> combining those attributes in a single attribute for symbolization?
>>
>> Thanks for any ideas,
>> Andreas
>>
>>
>
>


-- 
Andreas Neumann
http://www.carto.net/neumann/
http://www.svgopen.org/