Produce the choropleth map. The ID statement specifies the variable that is in both the map data set and the response data set that defines map areas. CDEFAULT= specifies the color for the map areas that have missing data. The WHERE= clause on the MAP= option excludes the islands of Greenland and Svalbard, which have no data in DEMOGRAPHICS data set.

proc gmap map=maps.europe(where=(id ne 405 and id ne 845))
          data=sashelp.demographics(where=(cont=93)) all;
  id id;
  choro pop / cdefault=yellow;
run;
quit;