Hi,Thomas:
We meet a problem of plotting 3d, which is a part of 5D. In other word, we just
fixed the rest of 2 variables and slice 5d into 3d.
Consider a function like Y=f(x1, x2, x3, x4). We want to have a 3D surface
plot in R for the fitted value Yhat (which is of course a function of x1, x2,
x3 and x4) against x1 and x2 say, keeping x3 at its median level and fixing x4
as =1 (note that x4 is binary which can take values of 1 or 0 only). So we plot
yhat, x1 and x2 in 3D surface after estimating the whole model (based on all 4
covariates) .
How do we do that? Please advice. If you feel it is more involved then Kun can
come to your office/consulting center for help.
Awaiting your reply.
Thanks for your time,
Best
Kun
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