Project the map onto a plane centered in the Pacific. The PROJECT= option specifies the projection method for the map data set. The POLELONG= and POLELAT= option specify a projection pole for the gnomonic projection. In this example, the pole is positioned in the Pacific Ocean.

proc gproject data=us48
              out=skew
              project=gnomon
              polelong=160
              polelat=45;
   id state;
run;