Per #2207, updates to the map data based on Natural Earth shapefiles …

…version 5.5.1

data/map/README.md

@@ -3,6 +3,49 @@ Map Data
 
 The data provided in this directory is used by the MET tools to add map outlines to plots. By default, the data files listed in **data/config/ConfigMapData** are plotted. However, users can override the **map_data** dictionary in the configuration files passed to the MET tools on the command line.
 
-The map data provide here is derived from [Natural Earth](https://www.naturalearthdata.com/) shapefiles. It corresponds to the 1:110m scale shapefiles and was last updated using version 5.5.1 from May 2022.
+The map data provide here is derived from [Natural Earth](https://www.naturalearthdata.com/) shapefiles. It corresponds to the 1:110m and 1:10m scale shapefiles and was last updated using version 5.5.1 from May 2022.
 
 The map data was reformatted using calls to the **make_mapfiles** development utility. Those calls are described below.
+
+- **country_data** contains 110m resolution country outlines.
+```
+make_mapfiles \
+110m_cultural/ne_110m_admin_0_countries.shp \
+110m_cultural/ne_110m_admin_0_countries.shx \
+110m_cultural/ne_110m_admin_0_countries.dbf NAME ADMIN
+mv ne_110m_admin_0_countries_data country_data
+```
+- **usa_state_data** contains 110m resolution state/province data for United States and Canada.
+```
+make_mapfiles \
+110m_cultural/ne_110m_admin_1_states_provinces.shp \
+110m_cultural/ne_110m_admin_1_states_provinces.shx \
+110m_cultural/ne_110m_admin_1_states_provinces.dbf name NA
+mv ne_110m_admin_1_states_provinces_data usa_state_data
+``` 
+- **admin_data** contains 10m resolution state/province data for all countries.
+```
+make_mapfiles \
+10m_cultural/ne_10m_admin_1_states_provinces.shp \
+10m_cultural/ne_10m_admin_1_states_provinces.shx \
+10m_cultural/ne_10m_admin_1_states_provinces.dbf name admin
+mv ne_10m_admin_1_states_provinces_data admin_data
+```
+- **admin_by_country** contains 10m resolution state/province organized into separate data files for each country.
+```
+make_mapfiles -outdir admin_by_country -separate_files \
+10m_cultural/ne_10m_admin_1_states_provinces.shp \
+10m_cultural/ne_10m_admin_1_states_provinces.shx \
+10m_cultural/ne_10m_admin_1_states_provinces.dbf admin name
+for file in `ls admin_by_country/ne_10m_admin_1_*`; do
+  mv $file `echo $file | sed 's/ne_10m_admin_1_states_provinces/admin/g'`
+done
+```
+
+TODO:
+- [x] admin_by_country (307586 lines)
+- [x] admin_data (307586 lines)
+- [x] country_data
+- [ ] country_major_lakes_data (23440 lines)
+- [ ] major_lakes_data (12567 lines)
+- [x] usa_state_data