topic Re: Proc Lifetest- plotting multiple lines on one graph in Graphics Programming

Proc Lifetest- plotting multiple lines on one graph

mdmorris — Thu, 28 Apr 2011 01:56:11 GMT

Hello--

I have three k-m curves that I'd like to plot on the same graph (thus showing three lines). Can someone help me with the syntax to achieve this? The time units are the same for the three models which will allow for them to be displayed on the same figure.

I greatly appreciate any suggestions anyone has! Been stumped for quite some time about this.
MDM

Re: Proc Lifetest- plotting multiple lines on one graph

DanH_sas — Thu, 28 Apr 2011 03:10:16 GMT

Here are a couple of approaches. The SGPLOT approach works only for SAS 9.2 or greater:

[pre]
proc sgplot data=survdata;
step x=time y=surv1;
step x=time y=surv2;
step x=time y=surv3;
run;

symbol1 i=stepj;
proc gplot data=survdata;
plot (surv1 surv2 surv3)*time / overlay;
run;
quit;
[/pre]

Hope this helps,
Dan

Re: Proc Lifetest- plotting multiple lines on one graph

mdmorris — Thu, 05 May 2011 23:35:41 GMT

YAY! Thank you so much. I ended up having to use the syntax with 'overlay' specified.