iOS - Z order of plotted line in Core Plot - core-plot

Question

I have integrated Core Plot in my iOS App.I have few issues as mentioned below:
1) Need to show yellow line and red line behind y-axis.
2) Need to have the y-range as 5,10,15 only.Link For Graph Image
Below is my code:
-(void)configureHost {
self.hostView = [(CPTGraphHostingView *) [CPTGraphHostingView alloc] initWithFrame:CGRectMake(60, 80, 400, 200)];
}
-(void)configureGraph {
CPTGraph *graph = [[CPTXYGraph alloc] initWithFrame:CGRectMake(10, 100, 300, 200)];
self.hostView.hostedGraph = graph;
graph.plotAreaFrame.borderLineStyle = nil;
graph.plotAreaFrame.cornerRadius = 10.0f ;
graph.paddingLeft = 0.0;
graph.paddingRight = 0.0;
graph.paddingTop = 0.0;
graph.paddingBottom = 0.0;
[graph.plotAreaFrame setPaddingLeft:30.0f];
[graph.plotAreaFrame setPaddingRight:20.0f];
[graph.plotAreaFrame setPaddingTop:20.0f];
[graph.plotAreaFrame setPaddingBottom:40.0f];
}
-(void)configurePlots {
CPTGraph *lGraph = self.hostView.hostedGraph;
CPTXYPlotSpace *lPlotSpace = (CPTXYPlotSpace *) lGraph.defaultPlotSpace;
CPTScatterPlot *lDataLinePlot = [[CPTScatterPlot alloc] init];
lDataLinePlot.dataSource = self;
lDataLinePlot.identifier = CPDTickerSymbolBLUELINE;
lDataLinePlot.interpolation = CPTScatterPlotInterpolationCurved;
CPTColor *lDataLineColor = [CPTColor blueColor];
[lGraph addPlot:lDataLinePlot toPlotSpace:lPlotSpace];
[lGraph.defaultPlotSpace scaleToFitPlots:[lGraph allPlots]];
CPTScatterPlot *lDangerLinePlot = [[CPTScatterPlot alloc] init];
lDangerLinePlot.dataSource = self;
lDangerLinePlot.identifier = CPDTickerSymbolDANGERREDLINE;
lDangerLinePlot.interpolation = CPTScatterPlotInterpolationCurved;
CPTColor *lDangerLineColor = [CPTColor redColor];
[lGraph addPlot:lDangerLinePlot toPlotSpace:lPlotSpace];
CPTScatterPlot *lYellowLinePlot = [[CPTScatterPlot alloc] init];
lYellowLinePlot.dataSource = self;
lYellowLinePlot.identifier = CPDTickerSymbolYELLOWLINE;
lYellowLinePlot.interpolation = CPTScatterPlotInterpolationCurved;
CPTColor *lYellowLineColor = [CPTColor yellowColor];
[lGraph addPlot:lYellowLinePlot toPlotSpace:lPlotSpace];
[lPlotSpace scaleToFitPlots:[NSArray arrayWithObjects:lYellowLinePlot,lDangerLinePlot,lDataLinePlot, nil]];
min=0;
lPlotSpace.yRange = [CPTPlotRange
plotRangeWithLocation:CPTDecimalFromCGFloat(min)
length:CPTDecimalFromCGFloat((15))];
CPTMutablePlotRange *lRangeX = [lPlotSpace.xRange mutableCopy];
[lRangeX expandRangeByFactor:CPTDecimalFromCGFloat(1.005f)];
lPlotSpace.xRange = lRangeX;
CPTMutablePlotRange *lRangeY = [lPlotSpace.yRange mutableCopy];
[lRangeY expandRangeByFactor:CPTDecimalFromCGFloat(1.0f)];
lPlotSpace.yRange = lRangeY;
CPTColor *lAreaColor = [CPTColor colorWithComponentRed:255.0 green:255.0 blue:255.0 alpha:1.0];
CPTGradient *lAreaGradient =[CPTGradient gradientWithBeginningColor:lAreaColor endingColor:[CPTColor clearColor]];
lAreaGradient. angle = 90.0f ;
CPTMutableLineStyle *lDataLineStyle = [lDataLinePlot.dataLineStyle mutableCopy];
lDataLineStyle.lineWidth = 3;
lDataLineStyle.lineColor = lDataLineColor;
lDataLinePlot.dataLineStyle = lDataLineStyle;
CPTMutableLineStyle *lYellowLineStyle = [lDataLinePlot.dataLineStyle mutableCopy];
lYellowLineStyle.lineWidth = 1.5;
lYellowLineStyle.lineColor = lYellowLineColor;
lYellowLinePlot.dataLineStyle = lYellowLineStyle;
CPTMutableLineStyle *lDataLineStyleSymbol = [CPTMutableLineStyle lineStyle];
lDataLineStyleSymbol.lineColor = lDataLineColor;
CPTMutableLineStyle *lYellowLineStyleSymbol = [CPTMutableLineStyle lineStyle];
lYellowLineStyleSymbol.lineColor = lYellowLineColor;
CPTMutableLineStyle *lDangerLineStyle = [lDangerLinePlot.dataLineStyle mutableCopy];
lDangerLineStyle.lineWidth = 1.5;
lDangerLineStyle.lineColor = lDangerLineColor;
lDangerLinePlot.dataLineStyle = lDangerLineStyle;
CPTMutableLineStyle *lDangerLineStyleSumbol = [CPTMutableLineStyle lineStyle];
lDangerLineStyleSumbol.lineColor = lDangerLineColor;
CPTMutableLineStyle *lDataSymbolLineStyle = [CPTMutableLineStyle lineStyle];
lDataSymbolLineStyle.lineColor = lDataLineColor;
CPTMutableLineStyle *lYellowSymbolLineStyle = [CPTMutableLineStyle lineStyle];
lYellowSymbolLineStyle.lineColor = lYellowLineColor;
}
-(void)configureAxes {
CPTMutableTextStyle *axisTitleStyle = [CPTMutableTextStyle textStyle];
axisTitleStyle.color = [CPTColor blackColor];
axisTitleStyle.fontName = #"Helvetica";
axisTitleStyle.fontSize = 13.0f;
CPTMutableLineStyle *axisLineStyle = [CPTMutableLineStyle lineStyle];
axisLineStyle.lineWidth = 3.0f;
axisLineStyle.lineColor = [CPTColor blackColor];
CPTMutableTextStyle *axisTextStyle = [[CPTMutableTextStyle alloc] init];
axisTextStyle.color = [CPTColor blackColor];
axisTextStyle.fontName = #"Bold";
axisTextStyle.fontSize = 8.0f;
CPTMutableLineStyle *tickLineStyle = [CPTMutableLineStyle lineStyle];
tickLineStyle.lineColor = [CPTColor blackColor];
tickLineStyle.lineWidth = 1.0f;
CPTXYAxisSet *axisSet = (CPTXYAxisSet *) self.hostView.hostedGraph.axisSet;
/////X-AXIS DATE
DateArray=[[NSMutableArray alloc]init];
NSDateFormatter *format=[[NSDateFormatter alloc]init];
format.dateFormat=#"MM/dd/yy";
NSCalendar *calendar1 = [NSCalendar autoupdatingCurrentCalendar];
NSDateComponents *components1 = [calendar1 components:NSCalendarUnitYear
| NSCalendarUnitMonth | NSCalendarUnitDay
fromDate:[NSDate date]];
for (int i = 0; i < 60; ++i)
{
NSDate *date1 = [calendar1 dateFromComponents:components1];
NSString *getDate1=[format stringFromDate:date1];
NSString *lReplaced = [getDate1 substringToIndex:5];
lReplaced = [lReplaced stringByReplacingOccurrencesOfString:#"-"
withString:#"/"];
NSString *match = #"/";
NSMutableString *preTel;
NSString *postTel;
NSScanner *scanner = [NSScanner scannerWithString:lReplaced];
[scanner scanUpToString:match intoString:&preTel];
[scanner scanString:match intoString:nil];
postTel = [lReplaced substringFromIndex:scanner.scanLocation];
NSString *newStr1;
NSString *newStr2;
if ([preTel intValue] <10) {
newStr1 = [preTel substringFromIndex:1];
}else{
newStr1=preTel;
}
if ([postTel intValue] <10) {
newStr2 = [postTel substringFromIndex:1];
}else{
newStr2=postTel;
}
lReplaced =[NSString stringWithFormat:#"%#%#%#",newStr1,match,newStr2];
[DateArray addObject:lReplaced];
++components1.day;
}
NSOrderedSet *mySet = [[NSOrderedSet alloc] initWithArray:DateArray];
DateArray = [[NSMutableArray alloc] initWithArray:[mySet array]];
//////// configure x-Axes
CPTAxis *x = axisSet.xAxis;
x.titleTextStyle = axisTitleStyle;
x.axisLineStyle = axisLineStyle;
x.labelingPolicy = CPTAxisLabelingPolicyNone;
x.labelTextStyle = axisTextStyle;
x.majorTickLineStyle = axisLineStyle;
x.tickDirection = CPTSignPositive;
CGFloat dateCount = [dayArray count];
NSMutableSet *xLabels = [NSMutableSet setWithCapacity:dateCount];
NSMutableSet *xLocations = [NSMutableSet setWithCapacity:dateCount];
int lIndex = 1;
for (int i=0;i< [DateArray count];i++)
{
// NSLog(#"i VAL:%d",i);
NSString *date = [DateArray objectAtIndex:i];
// NSLog(#"date:%#",date);
CPTAxisLabel *label = [[CPTAxisLabel alloc] initWithText:date textStyle:x.labelTextStyle];
CGFloat location = i*3.40;
//NSLog(#"LOC:%f",location);
label.tickLocation = CPTDecimalFromCGFloat(location);
label.offset = -20.0f;
[xLabels addObject:label];
[xLocations addObject:[NSNumber numberWithFloat:location]];
lIndex++;
i = i+6;
}
x.axisLabels = xLabels;
x.majorTickLocations = xLocations;
//////// Configure Y-Axes
CPTAxis *y = axisSet.yAxis;
y.title = #"Hb";
y.titleTextStyle = axisTitleStyle;
y.titleOffset = -30.0f;
y.axisLineStyle = axisLineStyle;
y.labelingPolicy = CPTAxisLabelingPolicyNone;
// y.preferredNumberOfMajorTicks=5;
y.labelTextStyle = axisTextStyle;
y.labelOffset = -35.0f;
y.majorTickLineStyle = axisLineStyle;
y.tickDirection = CPTSignPositive;
NSInteger majorIncrement = 5;
NSInteger minorIncrement = 5;
CGFloat yMax =15.0f;
NSMutableSet *yLabels = [NSMutableSet set];
NSMutableSet *yMajorLocations = [NSMutableSet set];
NSMutableSet *yMinorLocations = [NSMutableSet set];
for (NSInteger j = minorIncrement; j <= yMax; j += minorIncrement) {
NSUInteger mod = j % majorIncrement;
if (mod == 0) {
CPTAxisLabel *label = [[CPTAxisLabel alloc] initWithText:[NSString stringWithFormat:#"%li", (long)j] textStyle:y.labelTextStyle];
NSDecimal location = CPTDecimalFromInteger(j);
label.tickLocation = location;
label.offset = -20.0f;//-y.majorTickLength - y.labelOffset;
if (label) {
[yLabels addObject:label];
}
[yMajorLocations addObject:[NSDecimalNumber decimalNumberWithDecimal:location]];
} else {
[yMinorLocations addObject:[NSDecimalNumber decimalNumberWithDecimal:CPTDecimalFromInteger(j)]];
}
}
y.axisLabels = yLabels;
y.majorTickLocations = yMajorLocations;
y.minorTickLocations = yMinorLocations;
}

Answer 1

Use the topDownLayerOrder to move the axis line in front of the plots.
CPTPlotArea *plotArea = graph.plotAreaFrame.plotArea;
plotArea.topDownLayerOrder = #[#(CPTGraphLayerTypeAxisLines)];
Set the yRange to start at 5.0 with length 10.0:
lPlotSpace.yRange = [CPTPlotRange plotRangeWithLocation:CPTDecimalFromDouble(5.0)
length:CPTDecimalFromDouble(10.0)];