I need to plot pie chart using core plot in following slice way i.e slice at some distance.
please suggest me some way.
i hope if it helps you Using Core Plot in an iPhone Application
Implement the following method in your datasource:
-(CGFloat)radialOffsetForPieChart:(CPTPieChart *)pieChart recordIndex:(NSUInteger)index;
See the donut chart example in the Plot Gallery app for a sample.