Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.

Showing results for

- Home
- /
- Programming
- /
- SAS Procedures
- /
- Contour plot of quadratic regression model

- RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Mute
- Printer Friendly Page

- Mark as New
- Bookmark
- Subscribe
- Mute
- RSS Feed
- Permalink
- Report Inappropriate Content

Posted 08-12-2016 08:53 PM
(1317 views)

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.

6 REPLIES 6

- Mark as New
- Bookmark
- Subscribe
- Mute
- RSS Feed
- Permalink
- Report Inappropriate Content

If you don't have any CLASS effect in your model, you could possibly get contour plots with proc RSREG.

PG

- Mark as New
- Bookmark
- Subscribe
- Mute
- RSS Feed
- Permalink
- Report Inappropriate Content

Thanks for the reply. Can you please give an example? I mean sample SAS code with proc rsreg

- Mark as New
- Bookmark
- Subscribe
- Mute
- RSS Feed
- Permalink
- Report Inappropriate Content

Example 85.1, in my version of the documentation, produces a contour plot.

PG

- Mark as New
- Bookmark
- Subscribe
- Mute
- RSS Feed
- Permalink
- Report Inappropriate Content

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;

- Mark as New
- Bookmark
- Subscribe
- Mute
- RSS Feed
- Permalink
- Report Inappropriate Content

You can save predictions of the model, then use proc g3d (and proc g3grid if needed).

- Mark as New
- Bookmark
- Subscribe
- Mute
- RSS Feed
- Permalink
- Report Inappropriate Content

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.

Registration is open! SAS is returning to Vegas for an AI and analytics experience like no other! Whether you're an executive, manager, end user or SAS partner, SAS Innovate is designed for everyone on your team. Register for just $495 by 12/31/2023.

**If you are interested in speaking, there is still time to submit a session idea. More details are posted on the website. **

What is Bayesian Analysis?

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.