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Ben wrote:
> Is it possible to draw the lines of percentiles of y on the graph?
Yes, use annotation. But each percentile ? That's 100 info obscuring
lines.
I boosted the number of data points to 200. With only 100 data points
(precluding ties) each y is it's own percentile!
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data x;
do i=1 to 200;
x=rand('normal')*10+i;
y=rand('normal')*10+i;
output;
end;
run;
proc rank data=x out=yrank(index=(ypercentile)) groups=100;
var y;
ranks ypercentile;
run;
data anno (keep=xsys ysys x y function);
set yrank;
by ypercentile;
retain xsys '1' ysys '2';
if first.ypercentile;
* if mod(ypercentile,10)=0; * every 10th percentile;
x = 0; function = 'MOVE'; output;
x=100; function = 'DRAW'; output;
run;
proc gplot data=x anno=anno;
plot y*x;
run;
quit;
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Richard A. DeVenezia
http://www.devenezia.com/
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