When the X-Axis's text is too long, it will cover the radar chart.

[GitHubWanglei]

When the X-Axis's text is too long, it will cover the chart.

How can I solve this problem?

[liuxuan30]

check out x axis renderer of radar chart renderAxisLabels(), I am not sure if this is by design or a bug

[GitHubWanglei]

I have set the label position of X-Axis in my objective-c project like this:

//set xAxis
ChartXAxis *xAxis = self.radarChartView.xAxis;
xAxis.labelFont = [UIFont systemFontOfSize:12];
xAxis.labelTextColor = [self colorWithHexString:@"#057748"];
xAxis.labelPosition = XAxisLabelPositionBottom;
xAxis.wordWrapEnabled = YES;
xAxis.labelWidth = 100;

But it had no effect.How can I set the label position correctly? Have any other properties or methods to solve this problem?

[liuxuan30]

I think it's about the anchor point of the label, so you may want to take a look at how the origin point is calculated, radar chart maybe a little tricky, because it could rotates, so just take a look at renderAxisLabels() if you can make some change first.
@danielgindi what you think, bug or by design?

[GitHubWanglei]

In the ChartXAxisRendererRadarChart.swift file, I found the renderAxisLabels() method, in this method, I found some lines like this:

let p = ChartUtils.getPosition(center: center, dist: CGFloat(chart.yRange) * factor + xAxis.labelRotatedWidth / 2.0, angle: angle)

drawLabel(context: context, label: label!, xIndex: i, x: p.x, y: p.y - xAxis.labelRotatedHeight / 2.0, attributes: [NSFontAttributeName: labelFont, NSForegroundColorAttributeName: labelTextColor], anchor: drawLabelAnchor, angleRadians: labelRotationAngleRadians)

I found the point p is thie X-Axis label's center, so, I think the point p should add some offset relative to the radarChartView's center, but how can I get the radarChartView's center.
The point p position and the problem in the image like this:

@liuxuan30 @danielgindi Can you fix this issue?

[GitHubWanglei]

I found when the label is English text, it's no issue. like this:

But when I use Chinese text, the issue will occur, like this:

What's wrong with this? @liuxuan30 @danielgindi

[liuxuan30]

hey you don't have to "@" at anyone, someone seeing this will try to help.
I am not sure why right now, maybe the text render engine, I don't know.

Since you know where is the code, you can try first...

Quite busy recently

[GitHubWanglei]

Thank you for your reply.

[danielgindi]

You have two questions in your screenshots:

1. How can I get this center? - Call centerOffsets on the chart view, or contentCenter on the viewport.
2. Why the missing offsets of the labels? Well, this must be how the text renderer handles the Chinese glyphs. It is given the correct instructions, as you can see with English, but renders incorrectly. It could be a bug in how CoreGraphics draws Chinese glyphs, but it is most probable that it is a bug in the specific font. So I would try a different font.