t Matplotlib basemap绘制州县不起作用

Question

就像书名上说的那样。我的drawcounties命令被忽略了，没有任何错误。它是不是只画在某些投影上？文件上没有这么说。在

import numpy as np
import matplotlib.pyplot as plt
from mpl_toolkits.basemap import Basemap, shiftgrid
import scipy

def BasemapParameters():
    """
    Sets up basemap.
    """
    m = Basemap(projection='mill', llcrnrlon = 230, llcrnrlat = 27,
                                   urcrnrlat = 45, urcrnrlon = 261,
                                   area_thresh = 1000., resolution='i')
    m.drawcounties(linewidth=0.5)
    m.drawcoastlines(linewidth=0.7)
    m.drawcountries(linewidth=0.5)
    m.drawstates(linewidth=0.5)
    m.drawmapboundary(linewidth=0.7)

def SavePlot(lvl,parameter,region,hour,padding):
    """
    Saves figure to file with given properties
    """
    plt.savefig('{0}_{1}_{2}_{3}.png'.format(lvl,parameter,region,hour),bbox_inches='tight',pad_inches = padding)
    plt.close("all")
    print('  "{0}_{1}_{2}_{3}.png" created.'.format(lvl,parameter,region,hour))

fig = plt.figure()
ax = fig.add_subplot(1,1,1)
BasemapParameters()
SavePlot('sfc','3hrpcp','sw','000',.07)

输出：

Answer 1

尝试在drawcountries中设置zorder=20（或更高的值），将郡线放在国家的顶部。另请参见https://github.com/matplotlib/basemap/issues/324。在

Answer 2

白色的海岸线在绘制，所以绘制的是多边形。在