topic plot predicted values in SAS Procedures

plot predicted values

deleted_user — Tue, 18 Aug 2009 22:01:39 GMT

Hi All,

I ran a regression analysis that produced four different equations. I would like to produce one graphic using predicted values from the four equations.

Any help or advice is appreciated.

Re: plot predicted values

deleted_user — Wed, 19 Aug 2009 11:41:06 GMT

You didn't say what PROC you are using. Assuming REG, the following code illustrates one approach (example with just two models but easily expanded) without any graph customizations:

proc reg data=test;
one: model y = x;
output out=pdata1 predicted=p1;
two: model y = x xsq;
output out=pdata2 predicted=p2;
run;
quit;

data plot;
merge pdata1 pdata2;
run;

proc gplot data=plot;
plot (p1 p2)*x/ overlay;
run;
quit;

Re: plot predicted values

deleted_user — Wed, 19 Aug 2009 18:25:16 GMT

Hi KMG,
Thanks for your answer. I appreciate it.
As I said, I got four equations (by M ) from the four different methods and I would like to plot the predicted values from all the four equations in one graph, join them and show the trends. With your proposal SAS disabled the By statement.
Fernando.

proc reg outest=est1 outsscp=sscp1 data=WDDGS.fractionsWDDGS24;
by M;
eq1: model Y=PS;
eq2: model Y=PS PSSQ / r cli clm;
plot predicted.*pssq;
plot Y*PSsq='a' predicted.*pssq='p' u95.*pssq='u' l95.*pssq='1' / overlay;
run;
quit;