[R] help with making figures

[Bert Gunter]

First convert your data from short fat to long thin format: Column
headings  for the transformed data frame are:

Year     Site     Result

This can be done in a variety of ways, but check out the reshape2
package or the reshape function ins the stats package.

Once you have the data in this form, , say in the data frame, mydat,
you can plot the series by sites in a trellised layout. Either the
lattice or ggplot2 package can do this easily. e.g. in lattice it is:

xyplot(Result ~Year|Site, data = mydat, type = "b")

You can adjust the layout etc. to your taste.

There's lots more you can do, depending on what is important to you,
but that should get you started.

Cheers,
Bert

On Thu, Oct 4, 2012 at 1:01 PM, megalops <megalops31 at hotmail.com> wrote:
> I need to make about 30 figures and I am trying to create a program in R that
> will make my life a lot easier.  First I will tell you how my data is setup.
> I have 30 sites and then data for each year at the site.  I have 10 years of
> data for each site.   Below is a small chunk of my data to show the format.
> 2000    2001    2002    2003    2004
> Site A  50      75      25      55      60
> Site B  58      22      68      77      30
>
> I am trying to write a program in R that will create figures showing the
> annual data for each individual site.  As opposed to making 30 individual
> graphs in Excel.  Any help would be greatly appreciated.
>
>
>
>
> --
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-- 

Bert Gunter
Genentech Nonclinical Biostatistics

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