Thanks, Jim. That's exactly what I want.
FD
On 10/21/07, Jim Lemon <[EMAIL PROTECTED]> wrote:
>
> FD wrote:
> > Hi,
> >
> > Could anyone give suggestions how to plot a scatter plot with 1 standard
> > deviation for each point. To make it clearer, here is a simple example:
> the
> > scatterplot is plot(X, Y), but I want to add 1 standard deviation
> according
> > to the value of Z for each Y.
> >
> > X Y Z
> > 1 3.5 1.1
> > . . .
> > . . .
> > . . .
> >
> Hi FD,
> There are lots of ways to do this (if I understand what you want).
>
> library(plotrix)
> # first way
> plot(1,3.5)
> dispbars(1,3.5,1.1)
> # second way
> plotCI(1,3.5,1.1)
>
> Another version of plotCI lives in the gplots package.
> errbar is in the Hmisc and sfsmisc packages.
> plotMeans in the Rcmdr package.
> and probably quite a few more.
>
> Jim
>
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