Eduard Szöcs eduardszoecs
eduardszoecs
/ Deriv.R
Created
July 27, 2016 13:58
— forked from gavinsimpson/Deriv.R
R functions to compute and plot the first derivative of a spline term in a GAM(M) fitted by `gam()` or `gamm()` in package mgcv
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| ################################################ | |
| ## Functions for derivatives of GAM(M) models ## | |
| ################################################ | |
| Deriv <- function(mod, n = 200, eps = 1e-7, newdata, term) { | |
| if(inherits(mod, "gamm")) | |
| mod <- mod$gam | |
| m.terms <- attr(terms(mod), "term.labels") | |
| if(missing(newdata)) { | |
| newD <- sapply(model.frame(mod)[, m.terms, drop = FALSE], | |
| function(x) seq(min(x), max(x), length = n)) |
eduardszoecs
/ derivSimulCI.R
Created
July 27, 2016 13:58
— forked from gavinsimpson/derivSimulCI.R
First derivatives and simultaneous confidence intervals for GAM spline terms
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| `derivSimulCI` <- function(mod, n = 200, eps = 1e-7, newdata, term, | |
| samples = 10000) { | |
| stopifnot(require("MASS")) | |
| if(inherits(mod, "gamm")) | |
| mod <- mod$gam | |
| m.terms <- attr(terms(mod), "term.labels") | |
| if(missing(newdata)) { | |
| newD <- sapply(model.frame(mod)[, m.terms, drop = FALSE], | |
| function(x) seq(min(x), max(x) - (2*eps), length = n)) | |
| names(newD) <- m.terms |