On 04/03/2021 8:41 a.m., DY Kim wrote:
Greetings!
I am currently using R x64 4.0.4.
I used the box-cox power transformation to create a range of lambdas and
log-likelihood values using the equation.
b1=boxcox (DV ~ IV1 + IV2, data= newdata)
The above codes automatically created a plot with lambdas and
log-likelihood values.
I want to add a main and subtitle to the plot. Would you please provide me
with codes? Any help would be appreciated. Thank you.
The MASS:::boxcox.default method doesn't support adding a title. If you
want one, you'll have to edit the function to put in a title in the call
to plot(). For example:
boxcox.default <- MASS:::boxcox.default
fix(boxcox.default)
and then edit this line
plot(xl, loglik, xlab = xlab, ylab = ylab, type = "l",
ylim = range(loglik, lim))
to
plot(xl, loglik, xlab = xlab, ylab = ylab, type = "l",
ylim = range(loglik, lim), main = "My title")
and save the result. (You could make a slightly more sophisticated
change such as adding "main" as an argument to the function, and using
"main = main" in the call to plot(). )
Duncan Murdoch
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