[Qgis-developer] Diagram improvements

[Kuhn Matthias, Vermessung]

Do you think circular diagrams (i.e. text and pie) need to have an option to scale their radius instead of their area?
In my opinion this is a bug in the current version and should be changed without option as it overexagerates bigger values. But maybe there is a reason to leave this choice to the user?

--
Matthias Kuhn
 

> -----Original Message-----
> From: qgis-developer-bounces at lists.osgeo.org 
> [mailto:qgis-developer-bounces at lists.osgeo.org] On Behalf Of 
> Matthias Kuhn
> Sent: Tuesday, August 07, 2012 5:37 PM
> To: Qgis Developer List
> Subject: [Qgis-developer] Diagram improvements
> 
> Hi,
> 
> I recently started an internship at Uster (a city in 
> Switzerland). My job will mostly be to improve QGIS. I'm 
> really looking forward to this great opportunity.
> 
> My first job is, to improve the diagrams. Any comments are 
> highly appreciated. (If you think something can be done 
> better differently, if you think something is useless, if you 
> are already working on something or you know about somebody 
> already working on something, if you wanna say thank you...)
> 
> Here a short list of what I've got on my ToDo list.
> 
> - Minimum size for diagrams (As an option, scale any diagram smaller
> than...): Done
> - Text diagram: Center text better vertically (As an option): Done
> - Charts are not placed on some polygons (e.g. banana shaped polygons.
> Should this be done with PAL library? Any help appreciated)
> - Ordering: Draw smaller charts on top of bigger one instead of hiding
> (randomly?) colliding diagrams.
> - Make diagrams area accurate! By now the radius instead of 
> area is scaled.
> - New diagram type: Bar chart
> - New diagram option: Split diagrams. (Pie charts / Bar 
> charts e.g. age
> pyramid)
> 
> If you're interested in the current state of work, have a 
> look at my git repo [0] on master. Where it says done in the 
> list above you should be able to check it out.
> 
> [0] https://github.com/matthias-kuhn/Quantum-GIS.git
> 
> Regards,
> I'm looking forward for comments
> 
> Disclaimer: Sorry if you get this topic the second time. I 
> thought I'd written something about it yesterday, but 
> couldn't find it in my history nor in the archives, so I'll 
> repeat myself and just believe, that I missed the send button 
> when I tried to click it.
> 
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