[R] Entering Data Files

[Greg Snow]

For reading data into R you should start with
http://cran.r-project.org/doc/manuals/R-data.html (or the local copy
that was installed with R on your machine).

For the example above the read.table function should be fine.  If you
want to change the shape of the resulting data frame then look at the
xtabs function, the reshape function or the reshape2 package.

On Wed, Jul 18, 2012 at 2:35 PM, darnold <dwarnold45 at suddenlink.net> wrote:
> Hi,
>
> Entering data from a given file is the hardest part of learning R for me.
> For example, I have this datafile from Moore's text:
>
> Live    Age     Count
> Parents Age19   324
> Another Age19   37
> OwnPlace        Age19   116
> Group   Age19   58
> Other   Age19   5
> Parents Age20   378
> Another Age20   47
> OwnPlace        Age20   279
> Group   Age20   60
> Other   Age20   2
> Parents Age21   337
> Another Age21   40
> OwnPlace        Age21   372
> Group   Age21   49
> Other   Age21   3
> Parents Age22   318
> Another Age22   38
> OwnPlace        Age22   487
> Group   Age22   25
> Other   Age22   9
>
> I can manually enter the numbers and create my table and barplot.
>
> x <- matrix(c(324, 378, 337, 318, 37, 47, 40, 38, 116, 279, 372, 487, 58,
> 60, 49, 25, 5, 2, 3, 9), c(5,4),byrow=T)
> rownames(x)=c("Parents","Another","OwnPlace","Group","Other")
> colnames(x)=c("Age19","Age20","Age21","Age22")
> x <- as.table(x)
>
> barplot(x,beside=T)
>
> But it would be nice to be able to read the data from the file, arrange it
> using R, then plot, if that is possible. Any suggestions?
>
> Thanks
>
> David
>
>
>
> --
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>
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-- 
Gregory (Greg) L. Snow Ph.D.
538280 at gmail.com