[R] getting multiple plots on a single plot

[David Winsemius]

On Mar 22, 2012, at 3:18 PM, Vihan Pandey wrote:

> Hi all,
>
> I have the following R script :
>
>
> #!/usr/bin/Rscript
>
> out_file = "hybrid.pdf"
> pdf(out_file, height=8.5, width=11)

At this point (assuming that you want three separate plots on the same  
page which is unclear but you do use different titles and ylabs, so I  
think this is implied) you would either be using layout()

?layout

.... or par() with arguments mfrow, mfcol, or mfg.

?par
>
> myvalues_1M <- read.csv("hybrid_sims_1M.csv",head=TRUE,sep=",")
> plot(myvalues_1M$num_sims_per_thread,myvalues_1M 
> $time_per_sim,xlab="Number
> of Simulations per Thread",ylab="Time per 1 million Simulations(in
> milliseconds)",col="red",main="For 1 million simulations")
> lines(myvalues_1M$num_sims_per_thread,myvalues_1M 
> $time_per_sim,col="red")

If on the other hand you want one plot frame with overlaid point/lines/ 
etc, then you should be determining your x and y limits before any  
plots and putting in the same limits for each plot Adding all your  
labels on the first plot and using:

par(new=TRUE) # which seems completely backward to me.

# I say again ...
? par


>
> myvalues_5M <- read.csv("hybrid_sims_5M.csv",head=TRUE,sep=",")
> plot(myvalues_5M$num_sims_per_thread,myvalues_5M 
> $time_per_sim,xlab="Number
> of Simulations per Thread",ylab="Time per 1 million Simulations(in
> milliseconds)",col="blue",main="For 5 million simulations")
> lines(myvalues_5M$num_sims_per_thread,myvalues_5M 
> $time_per_sim,col="blue")
>
> myvalues_10M <- read.csv("hybrid_sims_10M.csv",head=TRUE,sep=",")
> plot(myvalues_10M$num_sims_per_thread,myvalues_10M 
> $time_per_sim,xlab="Number
> of Simulations per Thread",ylab="Time per 1 million Simulations(in
> milliseconds)",col="green",main="For 10 million simulations")
> lines(myvalues_10M$num_sims_per_thread,myvalues_10M 
> $time_per_sim,col="green")
>
> dev.off()
>
> print(paste("Plot was saved in:", getwd()))
>
>
>
> This generates a 3 page pdf file with a plot on each page. They look  
> like this :
>
> http://s17.postimage.org/ud9ej1cnj/alpha1.png
> http://s13.postimage.org/7q3snqsrr/alpha2.png
> http://s14.postimage.org/sf374f12p/alpha3.png
>
> I want to plot all the 3 in one graph, in one page with the respective
> colours - red, blue, and green. Any ideas on how?
>
> Thanks,
>
> - vihan
>
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David Winsemius, MD
West Hartford, CT