Background color and floats on Y axis.

[tomkowz]

Hey, I'm trying to understand the library (iOS). I try to draw simple chart for forecast and have few problems:

• I cannot change background color. Don't really know which value I should modify. The background is still white. View in storyboard has transparent background.
• Values on Y axis are floating numbers instead of ints.
• How to disable showing X and Y axis when selecting some value on a chart?

Thank you in advance

[liuxuan30]

1. use UIView.backgroundColor
2. use yAxis.valueFormatter (+ forceLabelsEnabled + labelCount if you need to avoid duplicated int because 2.1 and 2.3 will be 2) read computeAxisValues carefully
3. use drawLabelsEnabled properly when you highlight or have your own customization

If you are trying to understand, read each class's properties first.

[danielgindi]

@tomkowz set UIView.opaque to false if you want the chart to have a UIColor.clearColor as its backgroundColor. Otherwise the transparent background will be drawn as a black color.

[tomkowz]

Setting opaque to false and backgroundColor to clearColor was the first thing I did. And background is still white.

[_chartView setViewPortOffsetsWithLeft:0 top:0 right:0 bottom:0]; // LineChartView
_chartView.descriptionText = @"";
_chartView.noDataTextDescription = @"You need to provide data for the chart.";
_chartView.xAxis.enabled = NO;
_chartView.rightAxis.enabled = NO;
_chartView.legend.enabled = NO;
_chartView.opaque = NO;
_chartView.backgroundColor = [UIColor clearColor];

[pmairoldi]

Are you sure you are not talking about the gridBackgroundColor? I'm pretty sure that it isn't white by default but maybe try that.

[tomkowz]

You're right. gridBackgroundColor is what I need to use.