[R] How to plot

[Petr Pikal]

On 28 Feb 2005 at 17:35, WeiQiang.Li at seagate.com wrote:

> Hello,
> 
>         I would like to know if R provides the similar function to
>         produce 
> the 4-in-1 graph ("Normal Plot of Residuals", "I Chart of Residuals",
> "Histogram of Residuals" & "Residuals vs Fits") as MiniTab. If do not
> have, could anyone please tell me how to produce above-mentioned
> individual chart?

Hi

> x<-rnorm(10)
> y<-10*x+5+rnorm(10)
> plot(x,y)
> fit<-lm(y~x)
> par(mfrow=c(2,2))
> qqnorm(resid(fit))
> hist(resid(fit))
> plot(fitted(fit),resid(fit))
>

for three plots. You can try to construct I Chart yourself. Go 
through help page of lm and you can find some other options how to 
plot your lm result.

Cheers
Petr








> 
>         Your help is greatly appreciated.
> 
> Best Regards,
> WeiQiang Li
> 
>  [[alternative HTML version deleted]]
> 
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Petr Pikal
petr.pikal at precheza.cz