// self.topPieChart = [[FFCPieChart alloc] initWithFrame:...];
// self.middlePieChart = etc.

DataItem *dataItem1 = [[DataItem alloc] initWithColor:[UIColor redColor] 
                                                value:0.4];
DataItem *dataItem2 = [[DataItem alloc] initWithColor:[UIColor colorWithPatternImage:[UIImage imageNamed:@"texture"]] 
                                                value:02.5];

self.topPieChart.palette = [FFCPieChart grayPalette];
[self.topPieChart setDataItems:@[@2, @3, @4, dataItem1, dataItem2]];
self.topPieChart.strokeColor = [UIColor whiteColor];
self.topPieChart.strokeWidth = 2;

self.pieChart.palette = [FFCPieChart warmPalette];
[self.pieChart setDataItems:@[@1, @2, @3, @4]];
self.pieChart.pieHole = 0.5;
self.pieChart.strokeWidth = 0.5;

[self.bottomPieChart setDataItems:@[@17, @27, @13, @24, @32, @12, @55]];