| plot2way {gamlss} | R Documentation |
This function is designed to plot a factor to factor interaction in a GAMLSS model.
plot2way(obj, terms = list(), what = c("mu", "sigma", "nu", "tau"),
parameter= NULL, show.legend = TRUE, ...)
obj |
A gamlss model |
terms |
this should be a character vector with the names of the two factors to be plotted |
what |
which parameters? |
parameter |
equivalent to |
show.legend |
whether to show the legend in the two way plot |
... |
Further arguments |
This is an experimental function which should be use with prudence since no other check is done on whether this interaction interfere with other terms in the model
The function creates a 2 way interaction plot
Mikis Stasinopoulos
Rigby, R. A. and Stasinopoulos D. M. (2005). Generalized additive models for location, scale and shape,(with discussion), Appl. Statist., 54, part 3, pp 507-554.
Stasinopoulos D. M., Rigby R.A. and Akantziliotou C. (2006) Instructions on how to use the GAMLSS package in R. Accompanying documentation in the current GAMLSS help files, (see also http://www.gamlss.org/).
Stasinopoulos D. M. Rigby R.A. (2007) Generalized additive models for location scale and shape (GAMLSS) in R. Journal of Statistical Software, Vol. 23, Issue 7, Dec 2007, http://www.jstatsoft.org/v23/i07.
data(aids)
ti <- factor(c(rep(1,18),rep(2,27)))
m1 <- gamlss(y~x+qrt*ti, data=aids, family=NBI)
m2 <- gamlss(y~x+qrt*ti, data=aids, family=NO)
plot2way(m1, c("qrt","ti"))
plot2way(m1, c("ti", "qrt"))