How to define a fixed step between consecutive labels on the X axis?

Question

I'm using the library mpandroidchart to plot a series of data on a line chart. The series is formed by point (x,y) where x represents the time (in seconds), and y represents a temperature. (The x values are random, and so there is not a max common divisor).

My attempt. As you can see, the labels on the Y's axis are well displayed, with a step of 10 unit. This doesn't hold for the X's axis.

So, I would like to define the step for the labels on the X's axis how to do, but I have no idea, and it seems an unsupported setting by the library. Can you help me?

Answer 1

您需要添加：

chart.getXAxis().setLabelsToSkip(10);

替换＆＃39; 10＆＃39;按您想要跳过的标签数量。

Answer 2

您可以使用XAxisValueFormater和setLabelsToSkip()：

public class MyCustomXAxisValueFormatter implements XAxisValueFormatter {

    @Override
    public String getXValue(String original, int index, ViewPortHandler viewPortHandler) {
        viewPortHandler.setMaximumScaleX(24f);
        float scalex=viewPortHandler.getScaleX();

        if(scalex>=2.6f && scalex <3f)
            mChart.getXAxis().setLabelsToSkip(47);
        if(scalex>=3f && scalex <4f)
            mChart.getXAxis().setLabelsToSkip(35);
        if(scalex>=4f && scalex <11f)
            mChart.getXAxis().setLabelsToSkip(23);
        if(scalex>=11f && scalex <18f)
            mChart.getXAxis().setLabelsToSkip(11);
        if(scalex>=18f && scalex <24f)
            mChart.getXAxis().setLabelsToSkip(5);

        return original;
    }
}

根据放大或缩小图表的数量，设置应该滑动多少个X轴标签。

希望它有所帮助！