Coreplot iOS - Remove border line around pie chart

Question

I've got a pie chart being generated through Coreplot. It's put a black line all the way around the chart and through all the segments like so:

I generate the chart with the following code:

-(CPTFill *)sliceFillForPieChart:(CPTPieChart *)pieChart recordIndex:(NSUInteger)index
{
CPTFill *areaGradientFill ;

if (index==0)
return areaGradientFill= [CPTFill fillWithColor:[CPTColor colorWithComponentRed:0.0f/255.0f green:111.0f/255.0f blue:115.0f/255.0f alpha:1.0f]];
else if (index==1)
    return areaGradientFill= [CPTFill fillWithColor:[CPTColor colorWithComponentRed:171.0f/255.0f green:213.0f/255.0f blue:199.0f/255.0f alpha:1.0f]];
else if (index==2)
    return areaGradientFill= [CPTFill fillWithColor:[CPTColor yellowColor]];

return areaGradientFill;
}

-(void)constructPieChart:(NSString *)datain;
{

NSArray *strings = [datain componentsSeparatedByString:@","];

dataforcharts = [datain componentsSeparatedByString:@","];

NSLog(@"dataforcharts: %@", dataforcharts);

// Create pieChart from theme
pieGraph = [[CPTXYGraph alloc] initWithFrame:CGRectZero];
CPTTheme *theme = [CPTTheme themeNamed:kCPTPlainWhiteTheme];
[pieGraph applyTheme:theme];
pieChartView.hostedGraph             = pieGraph;
pieGraph.plotAreaFrame.borderLineStyle = nil;
pieGraph.plotAreaFrame.masksToBorder = NO;

pieGraph.paddingLeft   = 20.0;
pieGraph.paddingTop    = 20.0;
pieGraph.paddingRight  = 20.0;
pieGraph.paddingBottom = 20.0;

pieGraph.axisSet = nil;

// Prepare a radial overlay gradient for shading/gloss
CPTGradient *overlayGradient = [[CPTGradient alloc] init];
overlayGradient.gradientType = CPTGradientTypeRadial;
overlayGradient              = [overlayGradient addColorStop:[[CPTColor blackColor] colorWithAlphaComponent:0.0] atPosition:0.0];
overlayGradient              = [overlayGradient addColorStop:[[CPTColor blackColor] colorWithAlphaComponent:0.3] atPosition:0.9];
overlayGradient              = [overlayGradient addColorStop:[[CPTColor blackColor] colorWithAlphaComponent:0.7] atPosition:1.0];

// Add pie chart
piePlot                 = [[CPTPieChart alloc] init];
piePlot.dataSource      = self;
piePlot.pieRadius       = 100.0;
piePlot.pieInnerRadius  = 50.0;
piePlot.identifier      = @"Pie Chart 1";
piePlot.startAngle      = M_PI_4;

  //  piePlot.sliceDirection  = CPTPieDirectionCounterClockwise;
piePlot.borderLineStyle = [CPTLineStyle lineStyle];
piePlot.labelOffset     = -40.0;
piePlot.overlayFill     = [CPTFill fillWithGradient:overlayGradient];
[pieGraph addPlot:piePlot];

CPTMutableTextStyle *textStyle = [CPTMutableTextStyle textStyle];
textStyle.color = [CPTColor blackColor];
textStyle.fontName = @"Helvetica-Bold";
textStyle.fontSize = 16.0f;

pieGraph.title=@"Chart1";

pieGraph.titleTextStyle = textStyle;
pieGraph.titlePlotAreaFrameAnchor = CPTRectAnchorTop;
pieGraph.titleDisplacement = CGPointMake(0.0f, -1.0f);

int i = [[strings objectAtIndex:0] intValue];
int f = [[strings objectAtIndex:1] intValue];

NSLog(@"Int1: %i", i);
NSLog(@"Int2: %i", f);

// Add some initial data
NSMutableArray *contentArray = [NSMutableArray arrayWithObjects:[NSNumber numberWithDouble:i], [NSNumber numberWithDouble:f], nil];
self.dataForChart = contentArray;

CPTLegend *theLegend = [CPTLegend legendWithGraph:pieGraph];
theLegend.numberOfColumns = 2;
theLegend.fill = [CPTFill fillWithColor:[CPTColor whiteColor]];
theLegend.borderLineStyle = [CPTLineStyle lineStyle];
theLegend.cornerRadius = 5.0;

pieGraph.legend = theLegend;

pieGraph.legendAnchor = CPTRectAnchorBottom;
pieGraph.legendDisplacement = CGPointMake(0.0, -0.0);
}

and I'd like to remove the black lines around the chart. I've already tried setting the borderLineStyle to nil but this doesn't seem to have any effect.

Any help is appreciated.

Thanks!

Adam

Answer 1

Use this and debug again, it's working.

piePlot.borderLineStyle = nil;