城市之间相隔距离的可视化呈现

最新推荐文章于 2023-05-01 09:43:19 发布

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最新推荐文章于 2023-05-01 09:43:19 发布

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分类专栏： Python

本文链接：https://blog.youkuaiyun.com/Theo93/article/details/104515303

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本文介绍如何使用Python的Basemap库，通过drawgreatcircle方法在地图上以圆弧长度展示城市之间的物理距离。文章详细讲解了如何定义类及其子类，实现计算和绘制城市间距离的功能，包括getCityNames、citiesDistance、centerCityDistance、setcolorandwidth和showmap等实例方法。此外，还提到了matplotlib与basemap的版本兼容问题以及Python 3.x的环境要求。

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import matplotlib as mpl
import matplotlib.pyplot as plt
import numpy as np

from mpl_toolkits.basemap import Basemap

class MapDisVisualization(Basemap):

    # get city names
    def getCityNames(self,names):
        namesKeys = list(names.keys())
        return namesKeys

    # define distance between cityA and cityB
    def citiesDistance(self,x,y):
        d = np.power(np.power(x[0]-y[0],2)+np.power(x[1]-y[1],2),0.5)
        distance = round(d,4)
        return distance

    # compute distance between target city and every other city
    def centerCityDistance(self,city,names):
        distanceDict = {
   }
        namesKeys = self.getCityNames(names)
        for i,name in enumerate(namesKeys):
            if name != city:
                distanceDict[name] = self.citiesDistance(names[