小工具分享

使用前需要对标本数据做一定的预处理，使标本数据为以下格式的json文件：

[
    {
        "NO": "50",
        "CNname": "白芷",
        "LDname": "Angelica dahurica",
        "Province": "北京市",
        "Local": "百花山"
    },
    {
        "NO": "51",
        "CNname": "白芷",
        "LDname": "Angelica dahurica",
        "Province": "北京市",
        "Local": "百花山"
    },
    {
        "NO": "52",
        "CNname": "白芷",
        "LDname": "Angelica dahurica",
        "Province": "北京市",
        "Local": "百花山"
    },
    ……
]

工具是用typescript编写的，所以需要nodejs环境并安装typescript，相关知识网上查询，具体代码如下：

import axios from 'axios'
import fs from 'fs'

interface eachData {
  NO: string
  CNname: string
  LDname: string
  Province: string
  Local: string
}
type AllJsonData = eachData[]
interface BaiduResult {
  status: number
  result: {
    location: {
      lng: number
      lat: number
    }
    precise: number
    confidence: number
    comprehension: number
    level: string
    analys_level: string
  }
}
interface AllResult {
  NO: string
  lng: number
  lat: number
  comprehension: number
}

const Sleep = (ms: number) => {
  return new Promise((resolve) => setTimeout(resolve, ms))
}

const jsonData: AllJsonData = require('./白芷样点数据-NSII.json') //这里填写你的数据json路径

class LocationRequest {
  constructor(AllJsonData: AllJsonData) {
    this.DataSet = AllJsonData
  }

  private static BaiduAPIKey = 'baiduapikey' //这里填写自己申请的百度地图apikey，申请方法可网上查询
  private static Url = 'https://api.map.baidu.com/geocoding/v3/'
  DataSet: AllJsonData

  async GetLocationOnce(Local: string, Province: string): Promise<BaiduResult> {
    const { data } = await axios.get(
      LocationRequest.Url +
        '?output=json&ak=' +
        LocationRequest.BaiduAPIKey +
        '&address=' +
        Local +
        '&city=' +
        Province +
        '&extension_analys_level=1',
    )
    return data as BaiduResult
  }

  async GetAllLocation(): Promise<AllResult[]> {
    let allResult: AllResult[] = []
    for (let i = 0; i < this.DataSet.length; i++) {
      if (this.DataSet[i].Province != '0未记录' && this.DataSet[i].Local != '0未记录') {
        try {
          const data = await this.GetLocationOnce(this.DataSet[i].Local, this.DataSet[i].Province)
          console.log(
            `${this.DataSet[i].NO}：经纬度为:${data.result.location.lat},${data.result.location.lng},可解析度为:${data.result.comprehension}`,
          )
          allResult.push({
            NO: this.DataSet[i].NO,
            lng: data.result.location.lng,
            lat: data.result.location.lat,
            comprehension: data.result.comprehension,
          })
        } catch (error) {
          console.log(`${this.DataSet[i].NO}的经纬度获取失败!\n${error}`)
          allResult.push({
            NO: this.DataSet[i].NO,
            lng: 0,
            lat: 0,
            comprehension: 0,
          })
        }
      } else {
        console.log(`${this.DataSet[i].NO}未记录省市或区!`)
        allResult.push({
          NO: this.DataSet[i].NO,
          lng: 0,
          lat: 0,
          comprehension: 0,
        })
      }
      await Sleep(2000)
    }
    return allResult
  }
}

async function main() {
  const data = await new LocationRequest(jsonData).GetAllLocation()
  try {
    fs.writeFileSync('./白芷样点经纬度.json', JSON.stringify(data)) //这里填写你想结果输出的位置的路径
    console.log('写入成功!')
  } catch (error) {
    console.log(error)
  }
}

main()

成功运行后会输出一个json文件，内容格式如下：

[
    {
        "NO": "29",
        "lng": 115.7844632112745,   //经度
        "lat": 33.850642695788835,  //纬度
        "comprehension": 100          //可信度
    },
    {
        "NO": "30",
        "lng": 115.7844632112745,
        "lat": 33.850642695788835,
        "comprehension": 100
    },
    {
        "NO": "31",
        "lng": 115.7844632112745,
        "lat": 33.850642695788835,
        "comprehension": 100
    },
    ……
]

这个课题结束后可能会把这个工具用python重构并整合到我自己的工具脚本里吧