Hi there   I want to illustrate the effects of different local regressions. To do it, i generated some random data like this:   data ex; call streaminit(12345); do i = 1 to 250; x = rand('lognormal',0.6,0.5); y = 3*sin(x/2)+1 + rand('normal',0,0.5); output; end; run; So, the data points simulated are pairs of (x,y), where the underlying DGP is given by y. The reason i draw x from a lognormal is just because i want only a few observations in one part and many observations in another part of the x-axis (relevant for the context i am using the plot in).    Now, my problem is: I would like to make a scatterplot with the generated observations, and at the same time plot the deterministic part of the underlying DGP [name it z = 3*sin(x/2)+1]. Is it possible to do this in for example a proc sgplot without having to simulate a lot of (x,z) pairs?      ... View more