Pie chart update data set

[uditha2233]

• I've read, understood, and done my best to follow the *CONTRIBUTING guidelines.

What did you do?

I tried to update the initial values of the pie chart using below code
graphView.data = newData
graphView.animate(yAxisDuration: 1)
graphView.notifyDataSetChanged()

What did you expect to happen?

Expected to happen a smooth animation on the updated chart slices.

What happened instead?

Entire pie chart redrawn instead of updating only the slices I have updated. I just want to update only the changed slices not the entire chart. Please help to fix this.