Re: [R] Qurey : How to add trendline( st. line) in Graph

From: Sean O'Riordain <seanpor_at_acm.org>
Date: Mon 19 Jun 2006 - 22:10:09 EST

lines(predict(lm(g~f))~f,lty=2)
or if its a curvy line you're looking for... lines(predict(loess(g~f))~f,lty=3)

On 19/06/06, priti desai <priti.desai@kalyptorisk.com> wrote:
> How to add trendline (i.e. straight line passing through maximum points)
> in graph.
> I have worked on the data given below.
> Please tell me how to add trendline in the graph.
>
> The script is as follows
>
> =================================== start
> ====================================================
>
> # The data is as follows
>
> data <- c( 0.01, 0.02, 0.04, 0.13, 0.17 , 0.19 , 0.21 , 0.27 , 0.27 ,
> 0.28, 0.29, 0.37,
> 0.41, 0.49, 0.51, 0.52, 0.54, 0.57, 0.62, 0.63, 0.68,
> 0.73, 0.74, 0.79,
> 0.81, 0.81, 0.82, 0.86, 0.94, 0.96, 1.02, 1.10, 1.10,
> 1.20, 1.29, 1.36,
> 1.40, 1.41, 1.44, 1.45, 1.62, 1.67, 1.69, 1.78, 1.82,
> 2.11, 2.13, 2.14,
> 2.24, 2.29, 2.34, 2.40, 2.46, 2.70, 2.83, 2.98, 3.00,
> 3.30, 3.53, 3.70,
> 3.86, 3.90, 3.91, 3.98, 5.01, 5.23, 6.05, 6.12, 10.41,
> 10.73)
>
> # P-P plot
> average <- mean(data)
> lambda <- (1/average)
> e <- c(1:70)
> f <- c((e-.5)/70)
> Fx <- c(1 - exp(-lambda*data))
> g <- sort(Fx)
> plot(f,g)
>
> ===================================== end
> ====================================================
>
> Awaiting your positive reply.
>
> Regards.
> Priti.
>
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R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Mon Jun 19 22:26:51 2006

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