Re: [R] Query : Modification of graphs

From: Petr Pikal <petr.pikal_at_precheza.cz>
Date: Thu 13 Jul 2006 - 16:18:41 EST


Hi

On 12 Jul 2006 at 16:56, priti desai wrote:

Date sent:      	Wed, 12 Jul 2006 16:56:29 +0530
From:           	"priti desai" <priti.desai@kalyptorisk.com>
To:             	<r-help@stat.math.ethz.ch>
Subject:        	[R] Query : Modification of graphs

> How to change the background in the plots
> The e.g. for which I am working is as follows,
> The R script is
> ################### start
> #######################################
>
> amounts <-
> c(21790,5669,34921.17,60152.47,47228.61,16566.13,8283,3980,5445,1000,1
> 25
> 0,0,1285,1222,5001,600,1950,11580,7520,7999,4850,3850,16900,6095,0,424
> 6, 8556,8280,3020,7250,0,8807,0)
>
> # histogram
>
> hist(amounts)
>
> # P-P plot(exponential dist)
>
> Lambda <- 1/mean(amounts)
> N <- length(amounts)
> e <- c(1:N)
> f <- c((e-.5)/N)
> Fx <- c(1 - exp(-lambda*amounts))
> g <- sort(Fx)
>
>
> plot (f, g, main ="P-P Plot",col=6)
> abline (rq(g ~ f, tau = .5),col="blue")
>
>
>
> # Q-Q plot
>
> e <- c(1:N)
> f <- c((e-.5)/N)
> h <- c(1-f)
> i <- -log(h,base=exp(1))
> F1x <- c((1/lambda)*i)
>
> j <- sort(amounts)
> z12 <- sort(F1x)
>
> plot (j,F1x,main = "Q-Q Plot",col=6)
> abline (rq(F1x ~ j, tau = .5),col="red")
>
> ###################### end
> #########################################
>
> Please tell me how should I modify my graphs?
> i.e. change the background, colors,
> how should I modify histogram, P-P plots ,Q-Q plots?

Did you read help pages about plot and hist?

see parameter col = and look also to par help page and bg parameter.

BTW when you will look at these you could try also look at qqplot.

HTH
Petr

>
> Please suggest me the correct modification, if any calculations &
> formula in R.
> Awaiting your positive reply.
>
> Regards
> Priti.
>
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Petr Pikal
petr.pikal@precheza.cz



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 Thu Jul 13 16:23:40 2006

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