[R] Setting breaks for histogram of dates

[Loris Bennett]

Hi,

I have a list of dates like this: 

  date
  2009-12-03
  2009-12-11
  2009-10-07
  2010-01-25
  2010-01-05
  2009-09-09
  2010-01-19
  2010-01-25
  2009-02-05
  2010-01-25
  2010-01-27
  2010-01-27
  ...

and am creating a histogram like this

  t <- read.table("test.dat",header=TRUE)
  hist(as.Date(t$date), "years", format = "%d/%m/%y", freq=TRUE)
  
However, I would rather not label the breaks themselves, but instead
print the date with the format "%Y", between the breaks.

Is there a simple way of doing this?

Regards

Loris

-- 
Dr. Loris Bennett
ZEDAT Computer Centre
Freie Universität Berlin
Berlin, Germany