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Thanks for the report!

@fabian maybe you have an idea?

Including in scope of this duplicate (?) bug report #4748 When zooming to 150% in the browser, the pie charts are only partly visible. Particularly important on High-DPI displays, where 200% is the default.

Will there be a fix for this? Why is this so hard to fix?

BTW a possible workaround is to start your browser in low-resolution (can be selected by opening information of the App)
This is a really ugly workaround. I hoped to find a plugin to select only single pages to not render with retina resolution.
I hope this will be fix very very very soon. I hate it to have another browser running just to view piwik pie charts.

Here may be some code that might fix the problem
http://stackoverflow.com/questions/20221461/hidpi-retina-plot-drawing/20228300#20228300

Nothing is moving here and I get angrier every day when I have to switch to Opera running in non-retina mode just take a look on a pie chart. This is a unacceptable state! I wonder how many MacBook Users switched to GoogleAnalytics.
By the way with new Ubuntu and Windows 8.1 the number of users with HiDPI Displays and OS which support this will increase statically. So this will hurt more and more every day!

@dasch if you know a developer that can help fix this issue, we would be grateful

see my commit at BernhardValenti@f1c72b0 which fixes this on retina. i'll create a pull request, so you can decide if you want to include this hack (and test on non retina).

#271

In a5b61f4: Merge pull request #271 from wedgeV/jqplot-pie-fix

hack to fix pie chart size on retina Fixes #4594
Kuddos @wedgeV