[R] selection of hinge function with restrictions, machine learning, earth package,

Hi, I have a few questions regarding machine learning packages in R, e.g. earth package and its forward pass and prunning pass, and hinge functions selection in the example below. 1) How could I force the algorithm to generate knots in hinge function only with values 90 for e.g. variable doy?

[R] Copula package: How to calculate correlation matrix using 144 variables to denote parameters for normal copula?

Dears, I calculated correlation matrix using 144 variables with a given function: cor_flows_vec=cor() Then I defined a normal copula with the above correlation matrix myCop=normalCopula(param=cor_flows_vec, dim = 144, dispstr = un) Then I created a multivariate distribution with our defined