[R] mean of runoff for several years

[Clint Bowman]

Dominique,

Let's call your dataframe, df.

Then try:

with(df, boxplot(runoff ~ month))

which will plot the daily runoff distribution by month.

Clint

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On Wed, 23 Mar 2011, dominique wrote:

> Hello everyone
> I have a dataframe with 4 colums (year, month, day, runoff) for 1993-2009.
> Now I like to calculate the average runoff for each day. Finally I like to
> plot the median runoff for all this years.
> I tried with some loops, but it didn't work. Do you have any Tips for my
> problem?
> Any help is greatly appreciated! Thank you very much.
> Dominique
>
>
>
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