Beautiful geographical picture in SAS

You may have some geographacial data and want to present it a easily understandable way, how can we do that in SAS? Here are some example output we can make in SAS:

The coding part is relative easy, copy the following code and run in SAS, you will get some similar output: 

/**********************************/
goptions gunit=pct cback=white htitle=4 htext=3
colors=(PAGY LIY STY DEGY dark_yellow very_dark_yellow ) ;

title1 "US Population in 1990";
proc gmap map=maps.us data=maps.uscity all;
id state;

block pop/levels=6;
choro pop/levels=6;

run; quit; 

/***********************************/