Custom Scatter Plot

[H]

I have run a proc glm model (Outcome = continuous with two continous predictors). With the Ods Graphics and Plots active it provided the below contour plot. I love components of this plot for explaining the project.

However, my final model has 3 continuous predictors, so SAS does not generate the plot. I would like to reproduce the plot without the color contouring and I would like the dots to be color coded based on the quartiles of the third predictor. Which this seems achievable, but i have no idea how to put on the diagonal lines that represent the dependent variable into a graph.

So dataset would contain

Y: continous variable

X1: continuous variable

X2: continuous variable

X3: continuous variable, categorized into quartile and used to shade observations on the plot.

[H]

Original Plot

[Rick_SAS]

What version of SAS are you running?

[H]

9.4

Probably original release.

[H]

ods graphics on  ;
proc glm data=dka_please 	PLOTS=all;
	model HOURS_PH_NORM = 
		total_fluid 
		INTITIAL_PH;
run;
ods graphics off;

 Code is above for 2 IV model. In the final graph I would like to use labels to get rid of "_" and add units to variable names.

Side note, your Sim book was great Rick.