[Qgis-developer] custom charts?

[Neumann, Andreas]

Hi Raymond, 

Do you have an example how such a visualization could look like? Kind of
a mockup? 

In QGIS master, Matthieu Pellerin added additional simple markers now
(e.g. half/third/quarter circles, squares, triangles, etc.), e.g. to
create wingcharts. The combination of custom anchor points, offsets,
rotation and scaling on the symbol level allows for many interesting
visualizations - such as the "wing chart" showing commuters at train
stations by type (work, education, leisure, etc) at
http://www.carto.net/neumann/temp/commuters_by_type.png. With these
basic symbols you can also do other chart types as combinations of
scaled, rotated and offseted simple symbols to visualize sensor values. 

More such simple markers could be added, should there be the need for. 

Hope this helps, 

Greetings, 

Andreas 

On 2016-06-22 14:19, Raymond Nijssen wrote:

> Dear developers,
> 
> Can I somehow show custom images for each point feature on a map,
> similar to the layer diagrams?
> 
> Having locations with a few sensor values, I'd like to generate a custom
> image for every feature (for example svg or png) and have it displayed
> on my feature.
> 
> I've come up with some ideas:
> 
> - Create many custom svg files in a directory linked to qgis, and
> afterwards create a long rule-based style for every unique feature;
> 
> - Add a text field to my feature layer containig svg, and somehow make
> qgis display that on my map;
> 
> - 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.
> 
> None of those options seems to be possible. Does anybody know a solution?
> 
> Thanks!
> 
> Raymond
> 
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