Can not differentiate between data for plots, CorePlot - objective-c

Question

I am trying to plot 2 lines on 1 graph using CorePlot. Right now I am plotting the same data twice, I am not sure how to choose the other data source.
Any help would be appreciated.
Code:
graph view code .m:
CPTScatterPlot *limitplot = [[CPTScatterPlot alloc] init];
limitplot.dataSource = self;
limitplot.identifier = #"limplot";
limitplot.dataLineStyle = lineStylelimit;
limitplot.plotSymbol = plotSymbollimit;
[self.graph addPlot:limitplot];
CPTScatterPlot *calplot = [[CPTScatterPlot alloc] init];
calplot.dataSource = self;
calplot.identifier = #"plot";
calplot.dataLineStyle = lineStylecalc;
calplot.plotSymbol = plotSymbolcalc;
[self.graph addPlot:calplot];
}
// Delegate method that returns the number of points on the plot
-(NSUInteger)numberOfRecordsForPlot:(CPTPlot *)plot
{
if ( [plot.identifier isEqual:#"limplot"] )
{
return [self.graphData count];
}
else if ( [plot.identifier isEqual:#"plot"] )
{
return [self.graphData count];
}
return 0;
}
// Delegate method that returns a single X or Y value for a given plot.
-(NSNumber *)numberForPlot:(CPTPlot *)plot field:(NSUInteger)fieldEnum recordIndex:(NSUInteger)index
{
if ( [plot.identifier isEqual:#"limplot"] )
{
NSValue *value = [self.graphData objectAtIndex:index];
CGPoint point = [value CGPointValue];
// FieldEnum determines if we return an X or Y value.
if ( fieldEnum == CPTScatterPlotFieldX )
{
return [NSNumber numberWithFloat:point.x];
}
else // Y-Axis
{
return [NSNumber numberWithFloat:point.y];
}
} else if ( [plot.identifier isEqual:#"plot"] )
{
NSValue *value = [self.graphData objectAtIndex:index];
CGPoint point = [value CGPointValue];
// FieldEnum determines if we return an X or Y value.
if ( fieldEnum == CPTScatterPlotFieldX )
{
return [NSNumber numberWithFloat:point.x];
}
else // Y-Axis
{
return [NSNumber numberWithFloat:point.y];
}
}
return [NSNumber numberWithFloat:0];
}
Data .m:
NSMutableArray *limitdata = [NSMutableArray array];
[limitdata addObject:[NSValue valueWithCGPoint:CGPointMake(5477, 5400)]];
[limitdata addObject:[NSValue valueWithCGPoint:CGPointMake(5292, 5400)]];
[limitdata addObject:[NSValue valueWithCGPoint:CGPointMake(5053, 6425)]];
[limitdata addObject:[NSValue valueWithCGPoint:CGPointMake(5029, 7154)]];
[limitdata addObject:[NSValue valueWithCGPoint:CGPointMake(5138, 8300)]];
[limitdata addObject:[NSValue valueWithCGPoint:CGPointMake(5503, 8300)]];
[limitdata addObject:[NSValue valueWithCGPoint:CGPointMake(5570, 7100)]];
[limitdata addObject:[NSValue valueWithCGPoint:CGPointMake(5477, 5400)]];
self.lewis = [[TUTSimpleScatterPlot alloc] initWithHostingView:_graphHostingView andData:limitdata];
[self.lewis initialisePlot];
double cofullMass = [coTOMass doubleValue];
double cofullStation = [coTOstation doubleValue];
double coeeMass = [coEEmass doubleValue];
double coeeStation = [coEEstation doubleValue];
double cossMass = [coSSmass doubleValue];
double cossStation = [coSSstation doubleValue];
double codryMass = [coZmass doubleValue];
double codryStation = [coZstation doubleValue];
NSMutableArray *caldata = [NSMutableArray array];
[caldata addObject:[NSValue valueWithCGPoint:CGPointMake(cofullStation, cofullMass)]];
[caldata addObject:[NSValue valueWithCGPoint:CGPointMake(coeeStation, coeeMass)]];
[caldata addObject:[NSValue valueWithCGPoint:CGPointMake(cossStation, cossMass)]];
[caldata addObject:[NSValue valueWithCGPoint:CGPointMake(codryStation, codryMass)]];
self.lewis = [[TUTSimpleScatterPlot alloc] initWithHostingView:_graphHostingView andData:caldata];
[self.lewis initialisePlot];

Answer 1

You've got everything correct including testing the plot identifier and the fieldEnum. Once you determine which plot is asking for data, use that to choose the right data array instead of getting the count and data points from self.graphData for both plots.