[R] data manipulation for plotting

[Gavin Simpson]

On Thu, 2008-02-14 at 14:35 +0000, rich at thevillas.eclipse.co.uk wrote:
> Hi,
> 
>    i'd like to plot some data that I have with the value on the x axis and freq
>    on the y axis.
> 
>    So, I need to calculate the freq a value is seen within my data vector
> 
>    for example, say i have a vector of data
> 
>    data=c(1,1,1,4,5,5,6)

Don't call your data 'data' ;-)

install.packages("fortunes")
library(fortunes)
fortune("dog")

> 
>    I want
> 
>    values<-c(1,4,5,6)
> 
>    freq<-c(3,1,2,1)

use ?unique and ?table

my.dat <- c(1,1,1,4,5,5,6)
values <- unique(my.dat)
values
tab <- table(dat)
tab
freq <- as.numeric(tab)
freq

plot(tab) # for one way of plotting what you want

plot(freq ~ values) # for another

HTH

G

> 
>    in order to enable me to plot this. Sorry, i'm new to R. What is standard
>    procedure here for plotting the data vector?
> 
>    cheers
> 
>    Rich
> 
> 
> 
> 
> 
>    
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