the polygons and graphics elements that were drawn before it. In that case, you can use
transparency to enable the underlying polygons and graphics elements to show through.
Here is an example data set for three separate polygons.
data polydata;
input id x y;
datalines;
1 0 0
1 20 0
1 20 30
1 0 30
1 0 0
2 30 0
2 50 0
2 40 30
2 30 0
3 60 0
3 80 5
3 80 15
3 70 30
3 60 30
3 60 0
;
run;
In addition to the ID, X, and Y columns, the LABEL column is added to label the
polygons in the output. Notice that the observations for each ID value are grouped
together in the data set. The observations for each ID must occur contiguously in the
data. Otherwise, unexpected results ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month, and much more.