Live-Charts 绘制柱状图

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https://github.com/Live-Charts/Live-Charts

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LiveCharts ColumnSeries在运行时更新颜色
https://www.it1352.com/1817191.html
private void ChangeThirdChartPointColorToRed()
  {
    CartesianMapper<double> mapper = Mappers.Xy<double>()
      .X((value, index) => index)
      .Y(value => value)
      .Fill((value, index) => index == 2 ? Brushes.Red : Brushes.Blue);

    // Dynamically set the third chart point color to red
    this.BlueSeries.Configuration = mapper;
  }

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resultControl.columnSeries.Configuration = Mappers.Xy<City>() .X((city, index) => index) .Y(city => city.Population) .Fill((city, index) =>
{ if (index % 2 == 0) { return System.Windows.Media.Brushes.Blue; } else { return System.Windows.Media.Brushes.Red; } });

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               resultControl.columnSeries.Configuration = Mappers.Xy<City>().X((city, index) => index).Y(city => city.Population).Fill((city, index) =>
                {
                    return resultControl.SearchDefectColor("", city.Name);
                });

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https://blog.csdn.net/qq_23176133/article/details/86619080

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更改LiveCharts中坐标轴标签的格式 - 成整数
https://www.it1352.com/772285.html
Func<double, string> Formatter = (x) => string.Format("{0:0}", x);

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    //        Mapper = Mappers.Xy<DefectData>()
    //.X((city, index) => index)
    //.Y(city => city.Population);
    //        List<City> Cities = new List<City>();
    //        Cities.Add(new City { Name = "Bejing", Population=1000 });
    //        Cities.Add(new City { Name = "Shenzhen", Population = 800 });
    //        Cities.Add(new City { Name = "Shanghai", Population = 900 });

    //        var records = Cities.OrderByDescending(x => x.Population).Take(3).ToArray();

            //Results = records.AsChartValues();
            //Labels = new ObservableCollection<string>(records.Select(x => x.Name));

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https://blog.csdn.net/Oneal5354/article/details/128272758
DataLabels        是否显示数据，即在柱状图上显示数值

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Live Charts (lvcharts.com)