[R] Plotting error bars in xy-direction
bolker at ufl.edu
Wed Dec 5 16:54:16 CET 2007
Hans W Borchers wrote:
> Dear R-help,
> I am looking for a function that will plot error bars in x- or y-direction
> 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
> gregmisc, and plotrix packages. As I understand the descriptions and
> none of these functions provides horizontal error bars.
> Looking into 'errbar' and using segments, I wrote a small function for
> adding these kinds of error bars to existing plots. I would still be
> to know what the standard R solution is.
> Regards, Hans Werner
plotCI from plotrix will do horizontal error bars --
err: The direction of error bars: "x" for horizontal, "y" for
vertical ("xy" would be nice but is not implemented yet;
don't know quite how everything would be specified. See
examples for composing a plot with simultaneous horizontal
and vertical error bars)
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