现在正在学NCL，用它绘制了一样中国地图
load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl"
load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_csm.ncl"
begin
;---Area to zoom in on.
minlat = 17
maxlat = 55
minlon = 72
maxlon = 136
wks = gsn_open_wks("png","China_Map")
mpres = True
mpres@gsnMaximize = True
mpres@gsnDraw = False
mpres@gsnFrame = False
mpres@mpDataBaseVersion = "LowRes"
mpres@mpOutlineOn = False
mpres@mpLandFillColor = "white"
mpres@mpOceanFillColor = "white"
mpres@mpInlandWaterFillColor = "white"
;---Zoom in on area of interest
mpres@mpLimitMode = "LatLon"
mpres@mpMinLatF = minlat
mpres@mpMaxLatF = maxlat
mpres@mpMinLonF = minlon
mpres@mpMaxLonF = maxlon
map_plot = gsn_csm_map(wks,mpres) ; Create map, but don't draw it yet.
;****************************************************************************
; sections for shapefiles
;****************************************************************************
;---适合中国的国界地图
shpfn1="bou1_4l.shp"
lnres = True
lnres@minlat = minlat
lnres@maxlat = maxlat
lnres@minlon = minlon
lnres@maxlon = maxlon
shp_plot1 = gsn_add_shapefile_polylines(wks,map_plot,shpfn1,lnres)
;---加上省级区域地图
shpfn2="bou2_4p.shp"
gres = True
gres@minlat = minlat
gres@maxlat = maxlat
gres@minlon = minlon
gres@maxlon = maxlon
gres@gsEdgesOn =True
gres@gsEdgeColor ="blue"
shp_plot2 = gsn_add_shapefile_polygons(wks,map_plot,shpfn2,gres)
;---加上一级河流
shpfn3="hyd1_4l.shp"
lnres3 = True
lnres3@minlat = minlat
lnres3@maxlat = maxlat
lnres3@minlon = minlon
lnres3@maxlon = maxlon
shp_plot3 = gsn_add_shapefile_polylines(wks,map_plot,shpfn3,lnres3)
maximize_output(wks,False)
end效果如下：