Scatterplot Help: Graphing A Response Variable From Multiple Groups Over Time SAS University Edition

[jdgriffin]

Hello,

I need a bit of help creating a graph in SAS University Edition. 

What I am trying to do is create a scatterplot where x=response variable, y=time with 4 levels of a grouping variable. Each level of the grouping variable contains 10-12 observations at each time point. I am trying to display all observations across time, but with the observations from each group seperated in space on the chart. (I apologize if this description is lacking).

Here is what I have so far:

proc sgplot data=plin2bodycomp_organized;
      scatter x=time y=weight / jitter group=Treatment_Group;
run;

/*** weight= Response Variable, Treatment_Group= Group Variable **/


/* Note that jitter does technically separate the values in space, but it is not organized by group */

I have also attached the graph it produced:

In R, creating the seperation I am looking for can be dong with the "position dodge" arguments when using the ggplo2 package (example below). Does SAS have anything similar?

Thank you for your time and your help. 

[DanH_sas · Accepted solution]

On your SCATTER plot statement, add GROUPDISPLAY=CLUSTER and see if that works for you.

Thanks!

Dan

[jdgriffin]

Thanks, DanH, that worked!

Is there any way to change the distance between the groups clusters?

Also, in a related note, are there any highly recommended resources for graphing in SAS? I am new to SAS Graphing and would appreciate a solid reference.

Thanks

[DanH_sas]

Use the CLUSTERWIDTH option on the SCATTER statement. It is a value between 0 and 1. The default is something like 0.85. In your case, you want to shrink the cluster width, so try a value of 0.4.

As for a graphics reference (shameless plug alert :-)).... If you are working with the SG procedures, Sanjay Matange and I worked on book that should get you up-and-going with the procedures quickly. Check it out and see what you think...

https://www.sas.com/store/books/categories/examples/statistical-graphics-procedures-by-example-effec...

Thanks!
Dan

[Jay54]

You can also subscribe to "Graphically Speaking" blog for articles on graphing with SAS.

http://blogs.sas.com/content/graphicallyspeaking/

[jdgriffin]

Thanks again, DanH. This is exactly what I was looking for. 

Thanks also for the recommendation, I appreciate it.