如何制作 geoJson 文件并将其可视化

Question

如何在 Mac 上创建 geoJson 文件？我尝试了 touch new.geojson 之后将数据复制到文件中，但我认为它没有提供正确的文件类型，因为我无法在 Kepler.gl[ 上加载文件=43=]

我尝试上传此数据，但它从未在 Kepler 上加载。如果我从互联网上尝试一些随机示例，即使格式似乎相同，它也会立即加载。

"{"type":"LineString","coordinates":[[-0.796272,5.225736],[-0.795293,5.228452],[-0.806762,5.222764],[-0.818826,5.23953],[-0.829519,5.260144],[-0.860461,5.273933],[-0.890056,5.309425],[-0.875031,5.326234],[-0.843153,5.323144],[-0.801128,5.339694],[-0.759914,5.337996],[-0.642737,5.383214],[-0.642423,5.383474],[-0.575465,5.454165],[-0.558689,5.486223],[-0.514209,5.512632],[-0.364606,5.552434],[-0.343397,5.546054],[-0.309366,5.553826],[-0.285525,5.569787],[-0.28366,5.57064],[-0.257415,5.603225],[-0.156054,5.629528],[-0.015683,5.684939],[-0.014548,5.685099],[0.054634,5.763615],[0.289173,5.86565],[0.521139,5.896969],[0.530532,6.004213],[0.555024,6.007513],[0.574476,5.990664],[0.595112,5.998843],[0.595206,5.998879],[0.664647,6.019722],[0.665004,6.019413],[0.675656,5.984694],[0.66338,5.964361],[0.690962,5.941331],[0.719717,5.890157],[0.781744,5.843708],[0.830645,5.778435],[0.919066,5.801578],[0.925173,5.788085]]}"

我认为在尝试可视化之前应该把它变成这样：

{type:"LineString",coordinates:[[-0.796272,5.225736],[-0.795293,5.228452],[-0.806762,5.222764],[-0.818826,5.23953],[-0.829519,5.260144],[-0.860461,5.273933],[-0.890056,5.309425],[-0.875031,5.326234],[-0.843153,5.323144],[-0.801128,5.339694],[-0.759914,5.337996],[-0.642737,5.383214],[-0.642423,5.383474],[-0.575465,5.454165],[-0.558689,5.486223],[-0.514209,5.512632],[-0.364606,5.552434],[-0.343397,5.546054],[-0.309366,5.553826],[-0.285525,5.569787],[-0.28366,5.57064],[-0.257415,5.603225],[-0.156054,5.629528],[-0.015683,5.684939],[-0.014548,5.685099],[0.054634,5.763615],[0.289173,5.86565],[0.521139,5.896969],[0.530532,6.004213],[0.555024,6.007513],[0.574476,5.990664],[0.595112,5.998843],[0.595206,5.998879],[0.664647,6.019722],[0.665004,6.019413],[0.675656,5.984694],[0.66338,5.964361],[0.690962,5.941331],[0.719717,5.890157],[0.781744,5.843708],[0.830645,5.778435],[0.919066,5.801578],[0.925173,5.788085]]}

但是当我尝试将它们上传到 kepler 时，它们都不起作用。我还能如何创建 geoJson 文件？

我也试过在这里复制第一种格式： https://geoman.io/geojson-editor

之后我下载了 geoJSON 文件并尝试将其加载到 Kepler 中。即使上传 window 关闭，也没有任何反应。

编辑：

我尝试在 JsFiddle 上的 TurfJs 上执行此操作：

var stringnew = turf.lineString([-0.796272,5.225736],[-0.795293,5.228452],[-0.806762,5.222764],[-0.818826,5.23953],[-0.829519,5.260144],[-0.860461,5.273933],[-0.890056,5.309425],[-0.875031,5.326234],[-0.843153,5.323144],[-0.801128,5.339694],[-0.759914,5.337996],[-0.642737,5.383214],[-0.642423,5.383474],[-0.575465,5.454165],[-0.558689,5.486223],[-0.514209,5.512632],[-0.364606,5.552434],[-0.343397,5.546054],[-0.309366,5.553826],[-0.285525,5.569787],[-0.28366,5.57064],[-0.257415,5.603225],[-0.156054,5.629528],[-0.015683,5.684939],[-0.014548,5.685099],[0.054634,5.763615],[0.289173,5.86565],[0.521139,5.896969],[0.530532,6.004213],[0.555024,6.007513],[0.574476,5.990664],[0.595112,5.998843],[0.595206,5.998879],[0.664647,6.019722],[0.665004,6.019413],[0.675656,5.984694],[0.66338,5.964361],[0.690962,5.941331],[0.719717,5.890157],[0.781744,5.843708],[0.830645,5.778435],[0.919066,5.801578],[0.925173,5.788085]) console.log(stringnew); console.log('hi');

但我从未在控制台上看到任何输出。我还能如何进行转换？

http://jsfiddle.net/ed8hx01c/1/

如果我运行这个例子，我会在控制台上看到输出：

http://jsfiddle.net/andi_lo/o1wysgtj/

Answer 1

一个有效的 geojson LineString 应该是这样的：

{
   "type":"Feature",
   "properties":{

   },
   "geometry":{
      "type":"LineString",
      "coordinates": [[-0.796272,5.225736],[-0.795293,5.228452],[-0.806762,5.222764],[-0.818826,5.23953],[-0.829519,5.260144],[-0.860461,5.273933],[-0.890056,5.309425],[-0.875031,5.326234],[-0.843153,5.323144],[-0.801128,5.339694],[-0.759914,5.337996],[-0.642737,5.383214],[-0.642423,5.383474],[-0.575465,5.454165],[-0.558689,5.486223],[-0.514209,5.512632],[-0.364606,5.552434],[-0.343397,5.546054],[-0.309366,5.553826],[-0.285525,5.569787],[-0.28366,5.57064],[-0.257415,5.603225],[-0.156054,5.629528],[-0.015683,5.684939],[-0.014548,5.685099],[0.054634,5.763615],[0.289173,5.86565],[0.521139,5.896969],[0.530532,6.004213],[0.555024,6.007513],[0.574476,5.990664],[0.595112,5.998843],[0.595206,5.998879],[0.664647,6.019722],[0.665004,6.019413],[0.675656,5.984694],[0.66338,5.964361],[0.690962,5.941331],[0.719717,5.890157],[0.781744,5.843708],[0.830645,5.778435],[0.919066,5.801578],[0.925173,5.788085]]
   }
}

（使用 TurfJS 生成）

下载并享受可视化的乐趣！

编辑：如何使用turf.js

转到 turfjs.org 并打开开发工具控制台
粘贴以下内容：

const pseudo_line_string = {type:"LineString",coordinates:[[-0.796272,5.225736],[-0.795293,5.228452],[-0.806762,5.222764],[-0.818826,5.23953],[-0.829519,5.260144],[-0.860461,5.273933],[-0.890056,5.309425],[-0.875031,5.326234],[-0.843153,5.323144],[-0.801128,5.339694],[-0.759914,5.337996],[-0.642737,5.383214],[-0.642423,5.383474],[-0.575465,5.454165],[-0.558689,5.486223],[-0.514209,5.512632],[-0.364606,5.552434],[-0.343397,5.546054],[-0.309366,5.553826],[-0.285525,5.569787],[-0.28366,5.57064],[-0.257415,5.603225],[-0.156054,5.629528],[-0.015683,5.684939],[-0.014548,5.685099],[0.054634,5.763615],[0.289173,5.86565],[0.521139,5.896969],[0.530532,6.004213],[0.555024,6.007513],[0.574476,5.990664],[0.595112,5.998843],[0.595206,5.998879],[0.664647,6.019722],[0.665004,6.019413],[0.675656,5.984694],[0.66338,5.964361],[0.690962,5.941331],[0.719717,5.890157],[0.781744,5.843708],[0.830645,5.778435],[0.919066,5.801578],[0.925173,5.788085]]}

const line_string = turf.lineString(pseudo_line_string.coordinates);

JSON.stringify(line_string);
copy(line_string)

就是这样。

如何制作 geoJson 文件并将其可视化

How to make geoJson files and visualise them

json

geojson

kepler