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Abimal_Zippi
Fluorite | Level 6

How to write an interaction between a B-spline basis function and a continuous variable to a SAS data set?

1 ACCEPTED SOLUTION

Accepted Solutions
Ksharp
Super User
Check option OUTDESIGN= :

proc glmselect data=cars outdesign(addinputvars fullmodel)=SplineBasis;

View solution in original post

7 REPLIES 7
andreas_lds
Jade | Level 19

What would you expect to be stored in the dataset?

ballardw
Super User

Please at least show the code used to create the B-spline values or function so we have some of chance of providing a solution that uses the approach you used.

Abimal_Zippi
Fluorite | Level 6
proc transreg data=have design;
model bspl(x / nknots=2);
id id amount;
output out=spline_design;
run;
Abimal_Zippi
Fluorite | Level 6
proc transreg data=have design;
model bspl(x / nknots=2); 
id id amount;
output out=spline_design;
run;

I wanted to store the interaction between spl(x) and amount into SAS data set.

Abimal_Zippi
Fluorite | Level 6
The goal is to output the interaction as a design matrix, not an analysis of the spline effect of a predictor in the model.
Ksharp
Super User
Check option OUTDESIGN= :

proc glmselect data=cars outdesign(addinputvars fullmodel)=SplineBasis;

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