为此question添加一个进一步的要求,我还需要将海洋设置为蓝色(或其他任何颜色)。
对于“ PlateCarree”投影,我可以简单地做到这一点
crs = ccrs.PlateCarree()
crs_proj4 = crs.proj4_init
world = gpd.read_file(gpd.datasets.get_path("naturalearth_lowres"))
w = world.to_crs(crs_proj4)
g = w.plot(facecolor='sandybrown', edgecolor='black')
现在添加海洋的颜色
g.set_facecolor('#A8C5DD')
如果我现在想使用极地立体影像学
ccrs.NorthPolarStereo()
或
ccrs.SouthPolarStereo()
投影不起作用。将答案应用于此question时,我无法使海洋变色
答案 0 :(得分:1)
您需要在Cartopy geoaxes
上绘制地图几何图形,并使用cartopy.feature.OCEAN
绘制海洋。这是您可以尝试的工作代码。阅读代码中的注释以进行澄清。
import geopandas as gpd
import cartopy.crs as ccrs
import matplotlib.pyplot as plt
import cartopy
facecolor = 'sandybrown'
edgecolor = 'black'
ocean_color = '#A8C5DD'
#crs1 = ccrs.SouthPolarStereo()
crs1 = ccrs.NorthPolarStereo()
world = gpd.read_file(gpd.datasets.get_path("naturalearth_lowres"))
w1 = world.to_crs(crs1.proj4_init)
fig1, ax1 = plt.subplots(figsize=(7,7), subplot_kw={'projection': crs1})
# useful code to set map extent,
# --- if you want maximum extent, comment out the next line of code ---
ax1.set_extent([-60.14, 130.4, -13.12, -24.59], crs=ccrs.PlateCarree())
# at maximum extent, the circular bound trims map features nicely
ax1.add_geometries(w1['geometry'], crs=crs1, \
facecolor=facecolor, \
edgecolor=edgecolor, \
linewidth=0.5)
# this adds the ocean coloring
ax1.add_feature(cartopy.feature.OCEAN, facecolor=ocean_color, edgecolor='none')
plt.show()
输出图将是: