**Greg's Research » R**, and kindly contributed to R-bloggers)

Here is the link to the original problem. Briefly, I was unable to plot a custom x-axis showing abbreviated months in a time series plot of a zoo object.

In the `plot.zoo()`

function set `xaxt = "n"`

to suppress plotting of the x-axis

Since I needed abbreviated months to be plotted as the x-axis, I loaded a csv file with the dates of the first of each month as follows and converted it to dates:

“month”

2004-12-01

2005-01-01

2005-02-01

…

(I included Dec 2004, because otherwise “Jan” would not be plotted)

`month < - read.csv("~/R/2005months.csv")`

`month$month < - as.Date(month$month, "%Y-%m-%d")`

After the `plot.zoo`

command I added the following line –

`axis(1, month$month, format(month$month, "%b"))`

The solution was inspired by a post from Gabor Grothendieck on r-help. The original solution is still the only way to plot abbreviated months for time series plots of monthly averages.

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**Greg's Research » R**.

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