Hi, I want to know how can I get a contour plot of quadratic regression model in SAS 9.4. The proc glm does not give the contour plot automatically. Please help.
If you don't have any CLASS effect in your model, you could possibly get contour plots with proc RSREG.
Thanks for the reply. Can you please give an example? I mean sample SAS code with proc rsreg
Example 85.1, in my version of the documentation, produces a contour plot.
How can I get three-dimensional surface plots of quadratic regression model in SAS?
model yield = t pr t2 pr2 tp;
where t= temperature ( values scaled to -1,0 and 1)
pr= pressure ( values scaled to -1,0 and 1)
t2= t*t
pr2=pr*pr
tp=t*pr;
As PGStats said, look at the doc for PROC RSREG. The Getting Started example looks similar to what you need.
This (untested) code might point you in the right direction:
proc rsreg data=Have plots(unpack)=surface(3d);
model yield = temperature pressure;
run;
Notice that the procedure automatically fits a quadratic model, so you do not need to specify the quadratic terms for temperature^2, pressure^2 or temperature*pressure.
Don't miss out on SAS Innovate - Register now for the FREE Livestream!
Can't make it to Vegas? No problem! Watch our general sessions LIVE or on-demand starting April 17th. Hear from SAS execs, best-selling author Adam Grant, Hot Ones host Sean Evans, top tech journalist Kara Swisher, AI expert Cassie Kozyrkov, and the mind-blowing dance crew iLuminate! Plus, get access to over 20 breakout sessions.
Learn the difference between classical and Bayesian statistical approaches and see a few PROC examples to perform Bayesian analysis in this video.
Find more tutorials on the SAS Users YouTube channel.