Sorry I should have been more clearer. Let me repharse.

At the moment I have a loop that plots a histogram of the variable, along 
with rug and super-imposed normal curve over it. It does that for a lot of 
variables in the dataset and then compiles them into a pdf. Whereby each 
page on the pdf corresponds to the histogram of 1 variable.

However, it takes ages to load and takes up a lot of memory. So I was 
wondering if there is a way that before it gets compiled into a pdf, if I 
can convert my graphs into png or bitmaps images and then compile them 
into pdf?

This is my code so far:

pdf(file="C:/#temp/Histo and2.pdf") ##- Saves all plots in the same pdf 
file
for(k in 1:ncol(nums2)){    hist(nums2[,k],freq=F,col="lightblue1", 
#density=20   ##- Density -> Gives shaded bars
 main=names(nums2)[k],col.main="blue",cex.main=0.8,font=2,
                                 xlab=names(nums2)[k])  ##- Font=2 => bold
 
 #rug(jitter(nums2[,k]),side=1,col="antiquewhite3")
 
 lines(density(nums2[,k],na.rm=T),col="navy",lwd=2)          ##- Density 
Function of data
 
 curve(dnorm(x,mean=mean(nums2[,k],na.rm=T),sd=sd(nums2[,k],na.rm=T)),
                                  col="brown",lwd=3,add=T)
 
                            #  readline(prompt="Press [enter] to 
continue")
}
dev.off()
Hope this is much clearer?




From:   Jeff Newmiller <jdnewmil@dcn.davis.CA.us>
To:     Pavneet Arora/UK/RoyalSun@RoyalSun, r-help@r-project.org
Date:   22/04/2014 16:09
Subject:        Re: [R] Fw: Save multiple plots as pdf or jpeg



Sounds like you are getting what you want... except that you used the word 
"but". If you are not getting what you want, then what is it that you do 
want? In particular, how do you intend to review or use many plots 
generated at once if not in a PDF file?
---------------------------------------------------------------------------
Jeff Newmiller                        The     .....       .....  Go 
Live...
DCN:<jdnewmil@dcn.davis.ca.us>        Basics: ##.#.       ##.#.  Live 
Go...
                                      Live:   OO#.. Dead: OO#..  Playing
Research Engineer (Solar/Batteries            O.O#.       #.O#.  with
/Software/Embedded Controllers)               .OO#.       .OO#. rocks...1k
---------------------------------------------------------------------------

Sent from my phone. Please excuse my brevity.

On April 22, 2014 6:59:55 AM PDT, starter <pavneet.arora@uk.rsagroup.com> 
wrote:
>That is what I was trying to achieve; i.e. plot all my graphs using a
>loop
>function. But somewhere in the loop it converts each graph into png or
>bitmap image and then compiles all these png or bitmap images in a pdf
>file. 
>So each page in a pdf file is a bitmap or png picture of my graph.
>
>Does that make any sense?
>
>
>
>--
>View this message in context:
>
http://r.789695.n4.nabble.com/Fw-Save-multiple-plots-as-pdf-or-jpeg-tp4688801p4689256.html

>Sent from the R help mailing list archive at Nabble.com.
>
>______________________________________________
>R-help@r-project.org mailing list
>https://stat.ethz.ch/mailman/listinfo/r-help
>PLEASE do read the posting guide
>http://www.R-project.org/posting-guide.html
>and provide commented, minimal, self-contained, reproducible code.





______________________________________________________________________________________________

The following message has been automatically added to comply with the RSA 
Group IT Security requirements:

This email arrived via the internet, over a secure Opportunistic TLS 
encryption connection. 
This means the email was sent using encryption but the senders domain has 
not been verified for its authenticity. 
As such you still need to be cautious about its origin and content.
Replies which contain sensitive information or legal/contractual 
obligations are particularly vulnerable. 
In these cases you should not reply unless you are authorised to do so.

If you have any questions, please speak to the Service Centre on x7979.
______________________________________________________________________________________________


***********************************************************************************************************************************************************************************************************************
MORE TH>N is a trading style of Royal & Sun Alliance Insurance plc (No. 93792). Registered in England and Wales at St. Mark’s Court, Chart Way, Horsham, West Sussex, RH12 1XL. 

Authorised by the Prudential Regulation Authority and regulated by the Financial Conduct Authority and the Prudential Regulation Authority.
************************************************************************************************************************************************************************************************************************

	[[alternative HTML version deleted]]


