[R] How to control plotting formula above lm diagnostic plots?

[Uwe Ligges]

On 22.11.2012 18:58, ksaw wrote:
> Dear All,
>
> I am trying to plot four diagnostic plots for my lm in one window.
>
> Here is some random data for an example:
>    a = rnorm(20, mean=2, sd=0.2)
>    b = rnorm(20, mean=1, sd=0.4)
>    model=lm(a~b)
>
> When I set the page as:
>    par(mfrow=c(1,1), oma=c(1,0,2,0))
> and plot my model:
>    plot(model)
>
> above all four plots the formula lm(a~b) is printed.
>
> What is interesting if I set the page to have two plots per page (still
> plotting all four using plot(model)), the formula is plotted only above the
> last two. When I set the page to have one plot per page (still plotting all
> four using plot(model)) the formula is not printed above any of the plots.
>
> Is there any way to control plotting the formula above the diagnostic plots
> if I have multiple per page? To control the text size, font, position, or
> just not to have it plotted it at all? Playing with the option 'main' or
> 'cex.main' inside the 'plot' function does not change anything.


See ?plot.lm and its argument "sub.caption".

Uwe Ligges

> Many thanks
>
> Kasia
>
>
>
>
>
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>
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