Plotting map

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coarse LSCALE
low LSCALE
intermediate LSCALE
high LSCALE
auto LSCALE

import matplotlib.pyplot as plt
import cartopy.crs as ccrs
import cartopy.feature as cfeature


for lscale in ['coarse', 'low', 'intermediate', 'high', 'auto']:
    fig = plt.figure()
    sp = ccrs.Stereographic(central_longitude=0, central_latitude=60)
    ax = fig.add_subplot(1, 1, 1, projection=sp)

    corners = [-30, 30, 45, 75]
    #s = cfeature.AdaptiveScaler('coarse',
    #                (('low', 100), ('intermediate', 20), ('high', 5), ('full', 1)))
    #lscale = s.scale_from_extent([corners[0], corners[1], corners[2], corners[3]])
    #lscale = 'auto'
    print(lscale, 'LSCALE ')
    f = cfeature.GSHHSFeature(scale=lscale, levels=[1])
    ax.add_geometries(
        #f.intersecting_geometries(corners),
        f.geometries(),
        ccrs.PlateCarree(),
        facecolor=cfeature.COLORS['land'],
        edgecolor='black')

    ax.set_extent(corners, crs=ccrs.PlateCarree())
    gl = ax.gridlines(ccrs.PlateCarree())

    plt.show()