Pie chart is too small in tableview header view

[pavm035]

Hi,

I'm using pie chart in uitableview head review but the chart is too much small than its frame size, am I missing anything?

Thanks
Pavan

[pmairoldi]

A pie chart is supposed to be round so I believe that it tries to fit itself inside the frame but stay round. Try increasing the height of your header to make it bigger.

[pavm035]

@petester42 Thanks for the quick response, yes if i increase height it will work, but i wanted to know whether any work around to increase the diameter of the circle within the same height?

[pmairoldi]

No because that would lead to clipping the circle. You could increase the chart frame until it looks like you want without increasing the height. But that's kind of a hack.

Have you tried to change the chart padding or offset? I forget what it's called.

[pavm035]

Offset did not work, but increasing height actually making circle appearing bigger, i believe there would be some API actually which controls it, unfortunately i could not find right one yet

[danielgindi]

You can zero all the offsets - by disabling the legend like pieChart.legend.enabled = false.
Then if the pie is still too small for you - just adjust the size of the view.

[pavm035]

Thanks

[fsjack]

There's one point that @danielgindi didn't mention, that PieChartView leave space for the highlight selection slice, so if you don't need the highlight selection function you could also set selectionShift of data set to 0 to get rid of the blank padding.

[SylarRuby]

Hi @fsjack, what exactly do you mean? How to remove the padding and disable the slice highlight?

[Sebulec]

@SylarRuby It means, when you are preparing the chart data for example:
let pieChartData = PieChartData(dataSet: pieChartDataSet)
then you have to set selectionShift property to 0:
pieChartDataSet.selectionShift = 0

To disable slice highlight on pie chart:
chartView.highlightPerTapEnabled = false

[kevinOlivet]

Hi,
This worked for me:
setExtraOffsets(left: -15, top: -15, right: -15, bottom: -15)
Before:

After:

[FutureAndroidDeveloper]

If you dont need to maintain the selection of a piece of the diagram, you need to set the selection shift to 0.
This will remove extra padding from the bottom and top of your chart.

let dataSet = PieChartDataSet(entries: entries)
dataSet.selectionShift = 0