Dear all
I am stuck probably in a simple plotting question
My model is:model.1<-gamm4(y~s(x1, by=end.group)+Year+K1+k2+k3, data=..,
random=~(1|WB_ID/Site_ID))
where y is my dependent variable, x1 is the smooth covariate and I use the by
argument for the smooth term based on six different groups, and then the Year,
k1, k2, k3 are explanatory fixed variables
I use the plot command to plot the model and I get six different
plots:plot(model.1$gam, pages=1, xlab=" ", ylab=" ")
I would like to change the colour of the fitted and the standard error lines,
from black which is the default to another colour; I tried to use the col=" "
function, at least for the main line, in the plot command but it is not
working.
Any advice/suggestion is welcome.
Many thanks.Maria
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