I am using proc transreg (splines and knots) to generate a spline regression fit. I have tried many methods to modify the plot with no results. My plot is similar to this plot from the SAS user guide: The SAS code used to generate the plot above is title2 'A Cubic Spline Fit with Knots at X=5, 10, 15'; proc transreg data=a; model identity(y) = spline(x / knots=5 10 15); run; How do I modify the plot so that 1) only the fit line and its 95% CI are left on the graph? I wanted to get rid off the observed data points and the 95% CI for the observed. 2) How do I change the y axis scale to [0, 30] Your help is greatly appreciated! ... View more