iphone - コア プロット : ios は 2 つの y 軸と ScaterPlot と Bar Plot を同じ CPTGraph に表示します

Question

こんにちは、core plot を使用して 2 つの Y 軸 (左側と右側) と 1 つの x 軸を表示する方法を教えてください。CPTScatter プロットは、右側の Y 軸に -ve 方向で表示されます。

私のコードスニペット

-(void)configureAxes
{
    // 1 - Configure styles
    CPTMutableTextStyle *axisTitleStyle = [CPTMutableTextStyle textStyle];
    axisTitleStyle.color = [CPTColor whiteColor];
    axisTitleStyle.fontName = @"Helvetica-Bold";
    axisTitleStyle.fontSize = 8.0f;
    CPTMutableLineStyle *axisLineStyle = [CPTMutableLineStyle lineStyle];
    axisLineStyle.lineWidth = 2.0f;
    axisLineStyle.lineColor = [[CPTColor whiteColor] colorWithAlphaComponent:1];
    CPTMutableTextStyle *axisTextStyle = [[CPTMutableTextStyle alloc] init];
    axisTextStyle.color = [CPTColor whiteColor];
    axisTextStyle.fontName = @"Helvetica-Bold";
    axisTextStyle.fontSize = 8.0f;
    CPTMutableLineStyle *tickLineStyle = [CPTMutableLineStyle lineStyle];
    tickLineStyle.lineColor = [CPTColor whiteColor];
    tickLineStyle.lineWidth = 2.0f;
    CPTMutableLineStyle *gridLineStyle = [CPTMutableLineStyle lineStyle];
    tickLineStyle.lineColor = [CPTColor blackColor];
    tickLineStyle.lineWidth = 1.0f;

    // 2 - Get the graph's axis set
    CPTXYAxisSet *axisSet = (CPTXYAxisSet *) self.hostView.hostedGraph.axisSet;

    // 3 - Configure the x-axis
//    axisSet.xAxis.labelingPolicy = CPTAxisLabelingPolicyNone;
//    axisSet.xAxis.title = @"";
//    axisSet.xAxis.labelAlignment = CPTAlignmentRight;
//    axisSet.xAxis.titleTextStyle = axisTitleStyle;
//    axisSet.xAxis.titleOffset = 38.0f;
//    axisSet.xAxis.axisLineStyle = axisLineStyle;
//    axisSet.xAxis.labelTextStyle = axisTextStyle;
    CGFloat dateCount = [self.arrayData count];
    NSMutableSet *xLabels = [NSMutableSet setWithCapacity:dateCount];
    NSMutableSet *xLocations = [NSMutableSet setWithCapacity:dateCount];
    NSInteger i = 0;
    for (ResolutionData *d in self.arrayData)
    {
        CPTAxisLabel *label = [[CPTAxisLabel alloc] initWithText:[[d.appName componentsSeparatedByString:@"-"]objectAtIndex:0]  textStyle:axisSet.xAxis.labelTextStyle];
//        [label setRotation:45.0];
        CGFloat location = i++;
        label.tickLocation = CPTDecimalFromCGFloat(location);
        label.offset = axisSet.xAxis.majorTickLength;
        if (label) {
            [xLabels addObject:label];
            [xLocations addObject:[NSNumber numberWithFloat:location]];
        }
    }
    axisSet.xAxis.axisLabels = xLabels;
    axisSet.xAxis.majorTickLocations = xLocations;


    // 4 - Configre the y-axis
    CPTAxis *y = axisSet.yAxis;
    y.title = @"count";
    y.labelAlignment = CPTAlignmentCenter;
    y.titleTextStyle = axisTitleStyle;
    y.titleOffset = -40.0f;
    y.axisLineStyle = axisLineStyle;
    y.majorGridLineStyle = gridLineStyle;
    y.labelingPolicy = CPTAxisLabelingPolicyNone;
    y.labelTextStyle = axisTextStyle;
    y.labelOffset = 16.0f;
    y.majorTickLineStyle = axisLineStyle;
//    y.majorTickLength = 4.0f;
//    y.minorTickLength = 2.0f;
    y.tickDirection = CPTSignPositive;
    NSInteger majorIncrement = 20;
    NSInteger minorIncrement = 10;
    CGFloat yMax = 100.0f;  // should determine dynamically based on max price
    NSMutableSet *yLabels = [NSMutableSet set];
    NSMutableSet *yMajorLocations = [NSMutableSet set];
    NSMutableSet *yMinorLocations = [NSMutableSet set];
    int   x =1;
    for (NSInteger j = minorIncrement; j <= yMax; j += minorIncrement) {
        NSUInteger mod = j % majorIncrement;
        if (mod == 0) {
            CPTAxisLabel *label = [[CPTAxisLabel alloc] initWithText:[NSString stringWithFormat:@"%i", x] textStyle:y.labelTextStyle];
            [label setAlignment:CPTAlignmentTop];
            NSDecimal location = CPTDecimalFromInteger(j);x++;
            label.tickLocation = location;
            label.offset = -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;
}

私を助けてください。