[Qgis-developer] custom charts?

Hugo Mercier hugo.mercier at oslandia.com
Fri Jun 24 05:34:34 PDT 2016


It would be also cool to be able to directly use a string as image
content for a marker (rather than just for the filename).
That should be quite easy to do.

On 24/06/2016 14:28, Nathan Woodrow wrote:
> Raymond,
> 
> Code generated SVGs is a pretty cool idea.  Would be super keen to see
> that once you have something!
> 
> On Fri, Jun 24, 2016 at 10:25 PM, Neumann, Andreas <a.neumann at carto.net
> <mailto:a.neumann at carto.net>> wrote:
> 
>     Pretty cool - so we can deliver script-generated SVG code instead of
>     a filename? Nice!
> 
>     Care to do a blog post with some example? This sounds quite exciting
>     to me.
> 
>     Andreas
> 
>     On 2016-06-24 14:12, Raymond Nijssen wrote:
> 
>>     Hi Hugo,
>>
>>     It works! Thanks a lot!!
>>
>>     This is exactly what i was looking for, but somehow could not find.
>>
>>     Here is a little example with some fake svg's:
>>
>>     http://terglobo.nl/downloads/example.png
>>
>>     Now I will script generating svg based on real data.
>>
>>     Regards,
>>     Raymond
>>
>>
>>     On 23-06-16 09:02, Hugo Mercier wrote:
>>>     On 22/06/2016 19:06, Richard Duivenvoorde wrote:
>>>>     On 22-06-16 14:39, Hugo Mercier wrote:
>>>>>     Hi Raymond,
>>>>>>     - Add a text field to my feature layer containig svg, and
>>>>>>     somehow make
>>>>>>     qgis display that on my map;
>>>>>
>>>>>     This should work, no ?
>>>>
>>>>     Are you sure? This would mean that the value(!) of an attribute
>>>>     would
>>>>     contain the actual svg (code, not filename).
>>>>     Any example on how to use that with styling then?
>>>
>>>     Hmmm exact, I don't think you can include the content (I tried to
>>>     include a data url but it does not work).
>>>
>>>>
>>>>>>     - Add a text field to my feature layer containig a path to a
>>>>>>     png (or
>>>>>>     svg), and somehow make qgis display that on my map.
>>>>>
>>>>>     An SVG marker with the file name defined as an expression ?
>>>>
>>>>     Same here, while we managed to get for example colors dynamic,
>>>>     we could
>>>>     not find a way (yet) to set the marker-svg once filename is
>>>>     retrieved
>>>>     from an attribute...
>>>>
>>>>     Happy to get an example or pointers :-)
>>>
>>>     with an SVG-marker the filename can be "data-defined", so you can for
>>>     instance use an expression like '/xxx/mymarker_' || id || '.svg'
>>>
>>>
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