一.charts_flutter
1.pub.dev的地址：
https://pub.flutter-io.cn/packages/charts_flutter
2.案例页面：
https://google.github.io/charts/flutter/gallery.html
https://www.jianshu.com/p/75f112d54028
https://blog.csdn.net/qq_15931971/article/details/107861838【左右滑动的柱状图】
二.syncfusion_flutter_charts
1.pub.dev的地址：
https://pub.dev/packages/syncfusion_flutter_charts
2.案例页面
三.fl_chart
pub.dev的地址：
https://pub.flutter-io.cn/packages/fl_chart
案例导入：
https://www.163.com/dy/article/ERPBJJMM05318O5S.html