I would like to know if there's a package in R that enables to get a non-parametric regression (OLS, not quantile) that would have a positive (or negative) convexity constraint, as well as monotonicity. Right now, I have only found two packages (fdrtool and cir) that enable to impose only monotonicity. Thanks, TDB -- View this message in context: http://www.nabble.com/non-parametric-regression-with-a-convexity-constraint-tp17601021p17601021.html Sent from the R help mailing list archive at Nabble.com.