[R] Plotting error bars in xy-direction

From: Hans W. Borchers <hwborchers_at_gmail.com>
Date: Wed, 5 Dec 2007 09:44:52 +0000 (UTC)


Dear R-help,

I am looking for a function that will plot error bars in x- or y-direction (or both), the same as the Gnuplot function 'plot' can achieve with:

    plot "file.dat" with xyerrorbars,...

Rsite-searching led me to the functions 'errbar' and 'plotCI' in the Hmisc, gregmisc, and plotrix packages. As I understand the descriptions and examples, none of these functions provides horizontal error bars.

Looking into 'errbar' and using segments, I wrote a small function for myself adding these kinds of error bars to existing plots. I would still be interested to know what the standard R solution is.

Regards, Hans Werner



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