SAS: Spaghetti Plots for growth curves using SAS v.9.2 PROC SGPLOT and PROC SGPANEL

proc sort data=dat1;
by trt id time;
run;

proc sgplot data=dat1;
series x=time y=vol/group=trt break;
run;



proc sgpanel data=dat1;
panelby trt;
series x=time y=vol/break group=trt;
run;