如何在 Javascript 中将几何字符串如“POLYGON ((32.5 39.2, 32.6 39.4 ... ))”转换为 GeoJSON

Question

I have strings like

POLYGON ((32.5 39.2, 32.6 39.4 .... ))
POINT (32.4 39.2)

using Leaflet, React is there a way to convert these string to GeoJSON like:

{
  "type": "Feature",
  "geometry": {
    "type": "Point",
    "coordinates": [125.6, 10.1]
  },
  "properties": {
    "name": "Dinagat Islands"
  }
}

in JavaScript?

Answer 1

These strings are called WKT ( https://en.wikipedia.org/wiki/Well-known_text_representation_of_geometry ).

There are quite a few parsers out there: https://www.npmjs.com/search?q=wkt

"wellknown" and "wicket" can output GeoJSON, probably there are other modules that support this too.

Note that WKT represents just "geometry" field in GeoJSON, content of "properties" field should come from somewhere else (say if this was CSV - from other CSV columns).