Why one of my y-axis labels relabel correctly when I have called scaleToFit Method?

Question

I have added CPTSCatterPlot and CPTBarPlot for two CPTPlotSpaces in one graph.I have worten a method to reloadData for the graph but not working so correctly.I want two of graph reload the y-axis labels after I have called the ScaleToFit method. Here is my Code:

plotSpace1 = (CPTXYPlotSpace*)graph.defaultPlotSpace;
barPlot = [CPTBarPlot tubularBarPlotWithColor:[CPTColor colorWithCGColor:TJCOLOR1.CGColor] horizontalBars:_isHorizontal];
barPlot.identifier = @"Bar";
barPlot.delegate = self;
barPlot.dataSource = self;
[graph addPlot:barPlot toPlotSpace:plotSpace1];
[plotSpace1 scaleToFitPlots:[NSArray arrayWithObject:barPlot]];
plotSpace2 = [[CPTXYPlotSpace alloc]init];
[graph addPlotSpace:plotSpace2];
scatterPlot = [[CPTScatterPlot alloc]init];
scatterPlot.identifier = @"Scatter";
scatterPlot.delegate = self;
scatterPlot.dataSource = self;
[graph addPlot:scatterPlot toPlotSpace:plotSpace2];
    [plotSpace2 scaleToFitPlots:[NSArray arrayWithObject:scatterPlot]];
CPTXYAxis *x = axisSet.xAxis;

    x.labelingPolicy = CPTAxisLabelingPolicyNone;
    x.tickDirection =  CPTSignNegative;
    x.labelOffset = -20.0f;
    x.labelTextStyle = axisTextStyle;
    [self xlabelS:x];
    x.hidden = YES;
    //    x.axisConstraints = [CPTConstraints constraintWithLowerOffset:-3.0];

    y = [[CPTXYAxis alloc]initWithFrame:CGRectZero];
    y.labelingPolicy = CPTAxisLabelingPolicyAutomatic;
    y.plotSpace = plotSpace1;
    y.coordinate = CPTCoordinateY;
    y.orthogonalCoordinateDecimal = CPTDecimalFromFloat(0);
    y.labelExclusionRanges = nil;
    y.labelTextStyle = axisTextStyle;
    y.orthogonalCoordinateDecimal = CPTDecimalFromCGFloat(-0.5);

    y.hidden = YES;

    y2 = [[CPTXYAxis alloc]initWithFrame:CGRectZero];
    y2.labelingPolicy = CPTAxisLabelingPolicyAutomatic;
    y2.plotSpace = plotSpace2;
    y2.coordinate = CPTCoordinateY;
    y2.orthogonalCoordinateDecimal = CPTDecimalFromFloat([_titleArray count]);
    y2.titleLocation = CPTDecimalFromInt(0);
    y2.labelExclusionRanges = nil;
    y2.titleOffset = -10.0f;
    y2.labelOffset = -40.0f;
    y2.labelTextStyle = axisTextStyle;
    y2.hidden = YES;
    y2.majorGridLineStyle = gridLineStyle;
    NSArray *axies = [NSArray arrayWithObjects:x,y,y2, nil];
//    [axies addObject:y2];
    graph.axisSet.axes = axies;
 - (void)reloadData
{
     [graph.plotAreaFrame.plotArea removeAllAnnotations];
     [graph reloadData];
     [plotSpace1 scaleToFitPlots:[NSArray arrayWithObject:barPlot]];
     [plotSpace2 scaleToFitPlots:[NSArray arrayWithObject:scatterPlot]];
     CPTXYAxisSet *axisSet =  (CPTXYAxisSet*)hostingView.hostedGraph.axisSet;
     CPTXYAxis *x = axisSet.xAxis;
     [self xlabelS:x];
}
     - (void)xlabelS:(CPTXYAxis *)x
{
    NSMutableSet *xLabels = [NSMutableSet set];
    NSMutableSet *xLocations = [NSMutableSet set];
    NSInteger i = 0;
    for (NSString *date in _titleArray) {
        CPTAxisLabel *label = [[CPTAxisLabel alloc] initWithText:date  textStyle:x.labelTextStyle];
        CGFloat location = i++;
        label.tickLocation = CPTDecimalAdd(CPTDecimalFromCGFloat(location), barPlot.barWidth);
        label.offset = x.majorTickLength;
        if (label) {
            [xLabels addObject:label];
            [xLocations addObject:[NSNumber numberWithFloat:location]];
        }
    }
    //    x.labelingOrigin = CPTDecimalFromInt(1);

    x.axisLabels = xLabels;
    y.plotSpace = plotSpace1;
    y.labelingPolicy = CPTAxisLabelingPolicyAutomatic;
    y2.orthogonalCoordinateDecimal = CPTDecimalFromFloat([_titleArray count] );
}

Only the right y-axies relabeled correctly.Was anywhere I code wrong?Help me please!

Answer 1

The y-axis is tied to plotSpace1 . It is independent of the other plot space. No matter how plotSpace2 changes, it won't affect the y-axis. If you want to see both scales, you'll need to add another y-axis to plotSpace2 .