Core Plot CPTScatterPlot 'Line Graph' not showing - iphone

Question

So my problem is simple. I am trying to switch my chart from a bar graph to a line graph but my line chart does not show/plot. I use similar code for my CPTBarPlot 'Bar Chart' and this plots/shows correctly.
My Bar Plot Code which plots correctly is:
CPTBarPlot *barPlot = nil;
barPlot = [CPTBarPlot tubularBarPlotWithColor:[CPTColor colorWithComponentRed:0.9294f green:0.3960f blue:0.5921f alpha:1.0f] horizontalBars:NO];
barPlot.fill = [CPTFill fillWithColor:[CPTColor colorWithComponentRed:0.9294f green:0.3960f blue:0.5921f alpha:1.0f]];
barPlot.opacity = 0.8f;
barPlot.dataSource = self;
barPlot.delegate = self;
barPlot.baseValue = CPTDecimalFromString(#"0");
barPlot.barOffset = CPTDecimalFromFloat(0.50f);
switch (graphType) {
case kWeightThreeMonth:
{
barPlot.identifier = [GraphsViewController threeMonthBarPlotIdentifier];
}
break;
case kWeightSixMonth:
{
barPlot.identifier = [GraphsViewController sixMonthBarPlotIdentifier];
}
break;
case kWeightNineMonth:
{
barPlot.identifier = [GraphsViewController nineMonthBarPlotIdentifier];
}
break;
default:
break;
}
barPlot.barCornerRadius = 2.0f;
barPlot.lineStyle = nil;
[lineGraph addPlot:barPlot toPlotSpace:plotSpace];
My Line Plot Code which does not show is:
// Create a blue plot area
CPTScatterPlot *boundLinePlot = [[[CPTScatterPlot alloc] init] autorelease];
CPTMutableLineStyle *lineStyle = [CPTMutableLineStyle lineStyle];
lineStyle.miterLimit = 1.0f;
lineStyle.lineWidth = 3.0f;
lineStyle.lineColor = [CPTColor redColor];
boundLinePlot.dataLineStyle = lineStyle;
switch (graphType) {
case kWeightThreeMonth:
{
boundLinePlot.identifier = [GraphsViewController threeMonthBarPlotIdentifier];
}
break;
case kWeightSixMonth:
{
boundLinePlot.identifier = [GraphsViewController sixMonthBarPlotIdentifier];
}
break;
case kWeightNineMonth:
{
boundLinePlot.identifier = [GraphsViewController nineMonthBarPlotIdentifier];
}
break;
default:
break;
}
boundLinePlot.dataSource = self;
boundLinePlot.delegate = self;
[lineGraph addPlot:boundLinePlot toPlotSpace:plotSpace];
// Do a blue gradient
CPTColor *areaColor1 = [CPTColor colorWithComponentRed:0.3 green:0.3 blue:1.0 alpha:0.8];
CPTGradient *areaGradient1 = [CPTGradient gradientWithBeginningColor:areaColor1 endingColor:[CPTColor clearColor]];
areaGradient1.angle = -90.0f;
CPTFill *areaGradientFill = [CPTFill fillWithGradient:areaGradient1];
boundLinePlot.areaFill = areaGradientFill;
boundLinePlot.areaBaseValue = [[NSDecimalNumber zero] decimalValue];
// Add plot symbols
CPTMutableLineStyle *symbolLineStyle = [CPTMutableLineStyle lineStyle];
symbolLineStyle.lineColor = [CPTColor blackColor];
CPTPlotSymbol *plotSymbol = [CPTPlotSymbol ellipsePlotSymbol];
plotSymbol.fill = [CPTFill fillWithColor:[CPTColor blueColor]];
plotSymbol.lineStyle = symbolLineStyle;
plotSymbol.size = CGSizeMake(10.0, 10.0);
boundLinePlot.plotSymbol = plotSymbol;
Am I missing something here? I would of thought that the datasource etc would all work the same way considering the Bar Plot works correctly. I am simply just trying to switch from a bar chart, to a line chart.
Any help would be much appreciated.
Kind regards,
Dan

Answer 1

You may need to reload your plot's data. Try doing this:
[lineGraph reloadData]

Answer 2

This was actually my own fault.
In the dataSource methods;
-(NSUInteger)numberOfRecordsForPlot:(CPTPlot *)plot
-(NSNumber *)numberForPlot:(CPTPlot *)plot field:(NSUInteger)fieldEnum recordIndex:(NSUInteger)index
I was doing an If statement of;
if ( [plot isKindOfClass:[CPTBarPlot class]] ){
Ofcourse I was using a CPTScatterPlot so my code was not being called. Doh.