Animate a pie-chart in Keynote
Solution 1:
Here's one approach that's fairly quick and easy:
Create a Pie chart and input its values with the Chart Data Editor.
With the chart object selected, open the Slide Inspector and set the transition for Magic Move
With the chart still selected, copy the chart object using the menu or ⌘ + c
Create a new slide following your original and paste the chart object onto it.
Use the Chart Data Editor to change the values for your pie slices to reflect the new figures.
The chart will now morph from old to new when you advance the slides.
Solution 2:
I also wanted this effect , and am getting close to what I want by setting the first slide transition to 'Magic Move' with zero delay and Start Transition on 'Automatically', and then duplicating the first slide about 25 times, and incrementing each segment data value on each slide to get close to 'smooth clock winding' action on 'Play'