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gulp-svg2json

v1.1.2

Published

yfy svg2json gulp

Downloads

4

Readme

svg 转 geojson(gulp 插件)


[TOC]

使用方法

1.下载

git clone https://github.com/yuhonyon/svg2geojson.git

2.安装

cd geojson
cnpm i

3.使用

  • 将 svg 文件直接放在 ** svg/ ** 目录下
  • 输入命令
gulp
  • 在 ** dist/ ** 目录下将生产对应的目录,目录下有转换后的 geojson 文件以及行政中心的坐标文件和 svg 原文件

制作地图 geojson 数据的所有步骤

  • 设计地图草稿
  • 根据设计稿使用 ai 画矢量地图
  • 导出 svg
  • 使用 gulp 将 svg 转换为 geojson
  • 使用图表库制作地图

设计地图草稿

设计师设计地图草稿(只需明确行政划分区域即可),如下图

使用 AI 描出矢量图

  • 将设计草稿导入 AI
  • 新建图层,在图层内跟据设计稿使用钢笔工具描出一个行政区的行政(使用多边形描边)
  • 将该图层取名为行政区名字
  • 重复第 2 步,描出所有行政区

  • 选择所有描点,转换尖角,去除不小心画出的曲线(导出的 svg 不是由 polygon 组成的而是 path 的时候使用这个方法,建议描完后就使用一次)

  • 在每个图层中心处再画一个圆形或者椭圆

  • 删除设计草稿的图层导出 svg,没有出错的话格式应该如下

  • 如果发现 poluygon 标签变成了 path,请注意第 4 步骤

** 注意:导出的 svg 转换出的 geojson 制作的地图将会是垂直颠倒的(可能是坐标轴不一样, 一个左上角一个右下角),所以我们要把我们制作的 AI 图垂直翻转后再导出 svg **

将 svg 转换为 geojson

实例

echarts (echarts 会将地图横向压扁,需要设置宽高,不能自适应)

highcharts