从 csv 文件绘制纬度和经度

Question

您好，一整天都在尝试这样做！我用 Basemap 创建了一个地图，我正在尝试从 CSV 文件中绘制所有纬度和经度位置。有什么想法或提示吗？这是 csv 文件的图像

def map_test():
    col_list = ["longitude", "latitude"]
    dataset = pd.read_csv('charge_point_registry.csv', usecols=col_list)
    latitudes = dataset.loc[:, 'latitude']
    longitudes = dataset.loc[:, 'longitude']
    # Creates a base map ready for attributes

    plt.figure(figsize=(20, 15))
    m = Basemap(projection='mill',
            # coordinates of a box to contain map of UK
            llcrnrlat=48.632909,
            llcrnrlon=-14.452873,
            urcrnrlon=3.136989,
            urcrnrlat=61.648162,
            # quality of map
            resolution='l')
   m.drawcoastlines()
   m.drawcounties()
   m.fillcontinents(color = "green")
   geometry = [Point(xy) for xy in zip(longitudes, latitudes)]
   gdf = GeoDataFrame(dataset, geometry=geometry)
   gdf.plot(ax=m.plot(figsize=(20, 15)), marker='o', color='red', markersize=15)


# m.bluemarble()
  plt.show()

谢谢:)

Answer 1

Matplotlib Basemap 已弃用，取而代之的是 Cartopy。这是一些代码，可让您绘制英国数据。

import numpy as np
import cartopy
import cartopy.crs as ccrs
import cartopy.feature as cfeature
import matplotlib.pyplot as plt
import matplotlib.ticker as mticker
import pandas as pd

long_list = np.arange(-179.5, 180, 1)
lat_list = np.arange(-89.5, 90, 1)

value_dict = {'latitude':[51.0, 51.2, 53.4, 54.5],
              'longitude':[-1.1, -1.3, -0.2, -0.9]}

#replace this with your df
df = pd.DataFrame(value_dict)

proj = ccrs.PlateCarree(central_longitude=0)

fig, ax = plt.subplots(subplot_kw=dict(projection=proj), figsize=(16,16))
ax.set_extent([-10, 3, 48, 61], crs=ccrs.PlateCarree())

fig.canvas.draw()
fig.tight_layout()


ax.add_feature(cfeature.LAND, facecolor='0.25')
ax.add_feature(cfeature.BORDERS, zorder=10)

ax.scatter(df['longitude'].values.tolist(), df['latitude'].values.tolist())

gl = ax.gridlines(crs=proj, draw_labels=False, alpha=1, linewidth=0.25)
gl.xlocator = mticker.FixedLocator(long_list)
gl.ylocator = mticker.FixedLocator(lat_list)

plt.show()

从 csv 文件绘制纬度和经度

Plotting latitude and longitude from csv file

python

matplotlib

pandas

matplotlib-basemap