[Qgis-user] Data driven symbols and labelling

[les at true3d.com.au]

Andreas,

Thank you again for this information on data driven symbols and 
labelling.  My current work around is to use rule based symbols.  I 
still need to create each symbol individually.  The name of each rule 
becomes the label in the legend and  the symbol is displayed on the map 
as required.

This process works but is time consuming when there are more than 50 
points to label.  I was hoping to automate the process however I will 
continue as is for now.

I have been using QGIS exclusively since 2011 and it only gets better 
with each new version.  Although it will not yet create the legend I 
want, I am very happy with the software.

Regards,

Les Searle

On 26/07/2014 5:00 AM, qgis-user-request at lists.osgeo.org wrote:
> Message: 2
> Date: Fri, 25 Jul 2014 07:27:44 +0000
> From: Andreas Neumann<a.neumann at carto.net>
> To: qgis-user at lists.osgeo.org
> Subject: Re: [Qgis-user] Composite marker Symbol
> Message-ID:<53D206F0.8050903 at carto.net>
> Content-Type: text/plain; charset=UTF-8
>
> Hi Les,
>
> data-driven symbology and labeling is certainly possible. Look out for
> these small icons next to each property widget where you can either
> choose an attribute column or a QgsExpression (calculation). This works
> for virtually any property. If something is missing, it could certainly
> be added.
>
> Regarding the legend, things are more complicated. If you use a lot of
> data-driven symbology and labeling, generation of legends (both in the
> layer tree and in print composer) will not work properly. In print
> composer you can use a static legend as a workaround. You can draw the
> legend yourself in a graphics package like Illustrator/Inkscape and
> import the legend as SVG.
>
> It is an open, not so easy to solve issue how to properly generate
> dynamic legends based on data-defined symbology and labeling - to still
> work fast enough - and do not destroy a print layout.
> Ideas/comments/funding welcome ;-)
>
> Andreas
>
> Am 24.07.2014 21:06, schrieb les at true3d.com.au:
>> Andreas,
>>
>> Thank you for your advice regarding dynamic labelling.  I am able to
>> label my map similar to your example.  In the legend I would like to
>> show a marker symbol with a short description.  I would like the marker
>> to be data driven rather than create each marker individually.  Can this
>> be done in QGIS 2.4 Chugiak?
>>
>> Once again, thank you for your assistance.
>>
>> Regards,
>>
>> Les Searle
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