[R] matplot with dates/times on horizontal axis

Alex van der Spek doorz at xs4all.nl
Tue Jul 12 14:48:12 CEST 2011


where timestamp is a vector filled with POSIXct objects and xymatrix is 
a numeric 2x2 matrix plots but the horizontal axis labels are raw 
unformatted timestamps.

I would like to format these in any of the available codes for strftime, 
for instance format="%H:%M".

Passing a vector of formatted strings does not work. Any obvious other 
ways fail upon me as well.

Any ideas to make this work?

Thanks in advance,
Alex van der Spek

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