Line Chart Line is not drawing properly for the large yValues

[faizandedia]

I tried to integrate line chart but it seems it is not drawing it properly for the large yValues see the attached screenshot. see the screenshot. for small values it works fine.

[liuxuan30]

You need to provide the data sets so we can try reproduce. From the screenshot we can't tell what's wrong.

[faizandedia]

Here is the data I have

    NSMutableArray *xVals = [[NSMutableArray alloc] initWithObjects:@“Jun“,@”Jul”,@“Aug”, nil];


    NSMutableArray *yVals = [[NSMutableArray alloc] init];
    [yVals addObject:[[ChartDataEntry alloc] initWithValue:12238 xIndex:0]];
    [yVals addObject:[[ChartDataEntry alloc] initWithValue:14022 xIndex:1]];
    [yVals addObject:[[ChartDataEntry alloc] initWithValue:9286 xIndex:2]];

    LineChartDataSet *set1 = [[LineChartDataSet alloc] initWithYVals:yVals label:@"DataSet 1"];

    set1.lineWidth = 3.0;
    set1.circleRadius = 7.0;
    [set1 setColor:[UIColor whiteColor]];
    [set1 setCircleColor:[UIColor whiteColor]];
    set1.circleHoleColor = [UIColor colorWithRed:0 green:155/255.0f blue:223/255.0f alpha:1.0];
    set1.drawCircleHoleEnabled = true;
    set1.drawValuesEnabled = false;
    set1.drawFilledEnabled = false;

    NSMutableArray *dataSets = [[NSMutableArray alloc] init];
    [dataSets addObject:set1];


    LineChartData *data = [[LineChartData alloc] initWithXVals:xVals dataSets:dataSets];
    chartView.data = data;

[liuxuan30]

giving the value 9286, 12238, 14022, I think your distance on y axis is fine. Have you looked at what's the yAxis range?

[faizandedia]

I set the values for customAxisMin and Max, still giving the same result:

    double maxValue = MAX([value1 doubleValue], [value2 doubleValue]);
    maxValue = MAX(maxValue, [value3 doubleValue]);

    double minValue = MIN([value1 doubleValue], [value2 doubleValue]);
    minValue = MIN(minValue, [value3 doubleValue]);

    chartView.leftAxis.customAxisMax = maxValue;
    chartView.leftAxis.customAxisMin = minValue;
    chartView.leftAxis.startAtZeroEnabled = false;

[liuxuan30]

should be your setup problem, I don't have trouble with customAxisMax.
What's the order of calling chartView.data = yourData and chartView.leftAxis.customAxisMax = maxValue?
Have you tried to call notifyDataSetChanged after you changed the properties?

[faizandedia]

I tried to do that as well, still same output. Here is the full sample code

chartView.descriptionText = @"";
chartView.noDataTextDescription = @"";
chartView.noDataText = @"";

chartView.dragEnabled = NO;
[chartView setScaleEnabled:NO];
chartView.pinchZoomEnabled = NO;
chartView.drawGridBackgroundEnabled = NO;

chartView.backgroundColor = [UIColor clearColor];



ChartXAxis *xAxis = chartView.xAxis;
xAxis.labelFont = [UIFont systemFontOfSize:12.f];
xAxis.labelTextColor = UIColor.whiteColor;
xAxis.drawGridLinesEnabled = NO;
xAxis.drawAxisLineEnabled = NO;
xAxis.spaceBetweenLabels = 1.0;
xAxis.labelPosition = XAxisLabelPositionBottom;
xAxis.xOffset = 0;
xAxis.yOffset = 0;

ChartYAxis *leftAxis = chartView.leftAxis;
leftAxis.labelTextColor = [UIColor colorWithRed:51/255.f green:181/255.f blue:229/255.f alpha:1.f];
leftAxis.drawGridLinesEnabled = NO;
leftAxis.spaceTop = 0;
leftAxis.spaceBottom = 0;


chartView.rightAxis.enabled = NO;
chartView.leftAxis.enabled = NO;
chartView.legend.enabled = NO;

NSMutableArray *xVals = [[NSMutableArray alloc] initWithObjects:@“Jun“,@”Jul”,@“Aug”, nil];
NSMutableArray *yVals = [[NSMutableArray alloc] init];
[yVals addObject:[[ChartDataEntry alloc] initWithValue:12238 xIndex:0]];
[yVals addObject:[[ChartDataEntry alloc] initWithValue:14022 xIndex:1]];
[yVals addObject:[[ChartDataEntry alloc] initWithValue:9286 xIndex:2]];
LineChartDataSet *set1 = [[LineChartDataSet alloc] initWithYVals:yVals label:@"DataSet 1"];

    set1.lineWidth = 3.0;
    set1.circleRadius = 7.0;
    [set1 setColor:[UIColor whiteColor]];
    [set1 setCircleColor:[UIColor whiteColor]];
    set1.circleHoleColor = [UIColor colorWithRed:0 green:155/255.0f blue:223/255.0f alpha:1.0];
    set1.drawCircleHoleEnabled = true;
    set1.drawValuesEnabled = false;
    set1.drawFilledEnabled = false;

    NSMutableArray *dataSets = [[NSMutableArray alloc] init];
    [dataSets addObject:set1];

    double maxValue = MAX([value1 doubleValue], [value2 doubleValue]);
    maxValue = MAX(maxValue, [value3 doubleValue]);

    double minValue = MIN([value1 doubleValue], [value2 doubleValue]);
    minValue = MIN(minValue, [value3 doubleValue]);

    chartView.leftAxis.customAxisMax = maxValue;
    chartView.leftAxis.customAxisMin = minValue;
    chartView.leftAxis.startAtZeroEnabled = false;

    LineChartData *data = [[LineChartData alloc] initWithXVals:xVals dataSets:dataSets];
    chartView.data = data;
    [chartView notifyDataSetChanged];

[faizandedia]

The issue is fixed, somehow view was clipping the line from maxValue, I added extra margin in maxValue so It can be inside the view.

chartView.leftAxis.customAxisMax = maxValue + 500; // margin

Thanks for the help.. :)