全国省市区mysql脚本，带坐标拼音全称，表结构：
CREATE TABLE `st_districts` (
`id` varchar(10) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NOT NULL,
`name` varchar(200) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NOT NULL,
`parentid` varchar(10) CHARA
中国边境矢量文件，带地理坐标，可用envi等软件打开，进行影像裁剪等后续工作。
坐标信息：These data were extracted from the GADM database (www.gadm.org), version 2.8, November 2015. They can be used for non-commercial purposes only. It is not allowed to redistribute these data, or use them f
上篇文章给大家介绍了圆柱图：https://www.jb51.net/article/160958.htm
散点图(Scatter Chart),通常是一横一竖两个坐标轴，数据是一组二维坐标，分别对应两个坐标轴，与坐标轴对应的地方打上点。由此可以猜到，需要的元素包括circle(圆)和axis(坐标轴)。需要进行可视化的数据有:
//圆心数据
var center = [
[0.5,0.5],[0.7,0.8],[0.4,0.9],
[0.11,0.32],[0.88,0.25],[0
