长度转角度(lengthToDegrees)

> npm install @turf/helpers

Convert a distance measurement (assuming a spherical Earth) from a real-world unit into degrees Valid units: miles, nauticalmiles, inches, yards, meters, metres, centimeters, kilometres, feet

接收一个真实单位的距离测量数值(假设是球形地球)，返回其指定单位的数值。单位有 miles(英里), nauticalmiles(海里), inches(英寸), yards(码), meters(米), metres(米), kilometers(千米), centimeters(厘米), feet(英尺)

参数

参数	类型	描述
distance	number	测量数值
units	string	传入值单位。单位有 miles(英里), nauticalmiles(海里), inches(英寸), yards(码), meters(米), metres(米), kilometers(千米), centimeters(厘米), feet(英尺)

返回

number - degrees

turf.lengthToDegrees(6671704.814011974, 'meters'); // 60

基础用法

打开 要被转换的长度数值： 单位： 转换后的角度：

<template>
  <div style="position:relative;width:100%;height:400px; overflow: hidden;">
    <a-button
      type="primary"
      @click="
        () => {
          visible = true;
        }
      "
      >打开</a-button
    >
    <drawer :visible.sync="visible" :code="code">
      <a-row
        ><a-space
          >要被转换的长度数值：<a-input-number
            v-model="origin"
          ></a-input-number></a-space
      ></a-row>
      <a-row
        ><a-space
          >单位：<length-units
            :value.sync="unit"
          ></length-units></a-space
      ></a-row>
      <a-row
        ><a-space
          >转换后的角度：<a-input-number
            style="width:100%"
            :value="dest"
            disabled
          ></a-input-number></a-space
      ></a-row>
      <a-row> {{ result }}</a-row>
    </drawer>
  </div>
</template>
<script>
import * as turf from "@turf/turf";
import { GeoJSON } from "ol/format";
import { Style, Stroke } from "ol/style";
export default {
  data() {
    return {
      origin: 1,
      unit: "kilometers",
      result: null,
      visible: true,
    };
  },
  computed: {
    code() {
      return `let result = turf.lengthToDegrees(${this.origin}, '${this.unit}');`;
    },
    dest() {
      return turf.lengthToDegrees(this.origin, this.unit);
    },
  },
};
</script>

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