Sort of solved! Thanks to an off-line reply, from Joe, I've discovered that the Canada2 map is missing the X and Y coordinates for 7 province/segment combinations.

Art ------- On Sun, 29 Oct 2006 09:25:05 -0500, Arthur Tabachneck <art297@NETSCAPE.NET> wrote:

>I get the following warning when running a prism map using proc gmap: > > >WARNING: PRISM routine has encountered some missing values. > Beware that PRISM map may produce erroneous graph. > >I'm running the following code: > >data thefts_daily; > input province $2. theft_frequency; > cards; >10 0.0 >11 0.0 >12 13.7 >13 32.4 >24 45.6 >35 50.1 >46 117.1 >47 27.8 >48 47.6 >59 84.8 >60 0.0 >61 0.0 >; >run; > >goptions reset=all gunit=pct border cback=white > colors=(blue lime yellow red) > ctext=black ftext=swiss htitle=6 htext=3; > >title1 'Auto Theft Frequencies'; > >proc gmap map=maps.canada2 data=thefts_daily; > id province; > prism theft_frequency/ coutline=gray; >run; >quit; > >Can anyone see what might be causing the warning? > >Art