[R] Adding a title to a plot

[Duncan Murdoch]

Wow, that was an unnecessarily complicated suggestion.

Just run

  title("My title")

after running boxcox().

Duncan Murdoch

On 04/03/2021 12:30 p.m., Duncan Murdoch wrote:
> 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
>