使用cnmaps时无法产出正确的eps文件

[soldierofmushroom]

老师您好，我使用issue97您给出的代码，能够产出正确的eps文件（能用GSview打开，也能用在线网址成功转成png文件），代码如下：

import matplotlib.pyplot as plt
import cartopy.crs as ccrs
from cnmaps import get_adm_maps, clip_contours_by_map, draw_maps, MapPolygon
from cnmaps.sample import load_temp
from shapely.geometry import Polygon

fig = plt.figure(figsize=(6, 5), dpi=300)
ax = fig.add_axes([0.1, 0.1, 0.8, 0.8], projection=ccrs.PlateCarree())
lons, lats, data = load_temp()
cs = ax.contourf(lons, lats, data)

boundary = MapPolygon(
    [Polygon([[70, 55], [140, 55], [140, 40], [70, 40], [70, 55]])]
) & get_adm_maps(country="中华人民共和国", only_polygon=True, record="first")

draw_maps(get_adm_maps(country="中华人民共和国"), ax)
clip_contours_by_map(cs, boundary, ax)
ax.set_extent([70, 140, 40, 55], crs=ccrs.PlateCarree())
fig.savefig(r"d:/desktop/test1.eps", bbox_inches="tight")

但当我把绘图的区域向南拓展（上面的代码南边界是北纬40°，我拓展至北纬20°），则无法输出正确的eps文件（png和jpg这类文件还是能正常输出）
代码如下：

import matplotlib.pyplot as plt
import cartopy.crs as ccrs
from cnmaps import get_adm_maps, clip_contours_by_map, draw_maps, MapPolygon
from cnmaps.sample import load_temp
from shapely.geometry import Polygon

fig = plt.figure(figsize=(6, 5), dpi=300)
ax = fig.add_axes([0.1, 0.1, 0.8, 0.8], projection=ccrs.PlateCarree())
lons, lats, data = load_temp()
cs = ax.contourf(lons, lats, data)

boundary = MapPolygon(
    [Polygon([[70, 55], [140, 55], [140, 20], [70, 20], [70, 55]])]
) & get_adm_maps(country="中华人民共和国", only_polygon=True, record="first")

draw_maps(get_adm_maps(country="中华人民共和国"), ax)
clip_contours_by_map(cs, boundary, ax)
ax.set_extent([70, 140, 20, 55], crs=ccrs.PlateCarree())
fig.savefig(r"d:/desktop/test1.eps", bbox_inches="tight")

GSview给我的信息是这样的，我不知道是否有用，贴出来给您看看：

GSview 5.0 2012-01-17
Unknown in Comments section at line 6:
  %%Orientation: portrait


GPL Ghostscript 9.50 (2019-10-15)
Copyright (C) 2019 Artifex Software, Inc.  All rights reserved.
This software is supplied under the GNU AGPLv3 and comes with NO WARRANTY:
see the file COPYING for details.
Displaying DSC file D:/desktop/test1.eps without pages
Error: /stackoverflow in /--%ztokenexec_continue--
Operand stack:
   --nostringval--
Execution stack:
   %interp_exit   .runexec2   --nostringval--   --nostringval--   --nostringval--   2   %stopped_push   --nostringval--   --nostringval--   false   1   %stopped_push   1990   1   3   %oparray_pop   1989   1   3   %oparray_pop   1977   1   3   %oparray_pop   1833   1   3   %oparray_pop   --nostringval--   %errorexec_pop   .runexec2   --nostringval--   --nostringval--   --nostringval--   2   %stopped_push   --nostringval--
Dictionary stack:
   --dict:740/1123(ro)(G)--   --dict:0/20(G)--   --dict:80/200(L)--   --dict:8/8(L)--
Current allocation mode is local
Last OS error: No such file or directory

--- Begin offending input ---
5 l

252.072447 32.84414 l

252.066076 32.839663 l

252.064313 32.837363 l

252.065533 32.835734 l

252.06865 32.834785 l

252.070685 32.832479 l

252.071633 32.829359 l

252.071495 32.826787 l

252.069327 32.824892 l

252.065939 32.824211 l

252.063499 32.821634 l

252.062551 32.817843 l

252.059706 32.817162 l

252.055364 32.817705 l

252.051299 32.82123 l

252.050083 32.825027 l

252.047909 32.828009 l

252.044254 32.828147 l

252.041813 32.82869 l

252.033138 32.82666 l

252.027308 32.824625 l

252.021616 32.825305 l

252.015379 32.830595 l

252.013215 32.83412 l

252.014435 32.839674 l

252.01782 32.841033 l

252.022292 32.840491 l

252.025138 32.841301 l

252.027445 32.846722 l

252.031105 32.857841 l

252.033546 32.860552 l

252.03693 32.861905 l

252.051301 32.862715 l

cl

251.264929 33.039879 m

251.261618 33.050222 l

251.264516 33.06801 l

251.273619 33.077529 l

251.284793 33.077949 l

251.30507 33.064296 l

251.314434 33.06115 l

251.327671 33.060269 l

251.337205 33.066801 l

251.326361 33.0951
--- End offending input ---
file offset = 2408739
gsapi_run_string_continue returns -101

[soldierofmushroom]

补充说明：

把白化的那一行注释掉即可产出正确的eps文件