add Natural Earth GIS data

Author: khaeru

README.md

@@ -6,6 +6,7 @@ This repository contains Python 3 modules that retrieve, clean, subset and other
 * `chip` — China Household Income Project
 * `chfs` — China Household Finance Survey
 * `cn_nbs` — National Bureau of Statistics of China
+* `naturalearth` — [Natural Earth](http://naturalearthdata.com) GIS
 
 The modules are independent but have a roughly similar [API](https://en.wikipedia.org/wiki/Application_programming_interface). Each module…
 - contains a method like `load_ceic()` that returns data in a clean, Pythonic form.

naturalearth/.gitignore

@@ -0,0 +1,7 @@
+*.cpg
+*.dbf
+*.prj
+*.shp
+*.shx
+*.README.html
+*.VERSION.txt

naturalearth/Makefile

@@ -0,0 +1,15 @@
+BASE_URL="http://www.naturalearthdata.com/http//www.naturalearthdata.com/download/10m/cultural/"
+
+all: chn_provinces.shp
+
+chn_provinces.shp: ne_10m_admin_1_states_provinces.shp
+	ogr2ogr \
+	  -lco ENCODING=UTF-8 \
+	  -where "adm0_a3 ='CHN'" \
+	  $@ $<
+
+%.shp: %.zip
+	unzip -j $<
+
+%.zip:
+	curl -L -O $(BASE_URL)$@