
Thanks for the suggestion...but R still doesn't like it.  Now I have 3 error
messages.  It seems to dislike my *err=y* command.  I'm going to continue
trying.  Thanks for your help!  If you happen to spot anything else, please
let me know!

thanks!
beloitstudent


On Sat, Jun 5, 2010 at 5:16 PM, Joris FA Meys [via R] <
ml-node+2244611-1554261936-278019@n4.nabble.com<ml-node%2B2244611-1554261936-278019@n4.nabble.com>
> wrote:

> you can't refer to an argument within a function call. Try
>
> uiw <- Saline[,3]
>
> plotCI(x=Saline [,1],y=Saline [,2], uiw=uiw, liw=uiw, err=y, pch=21,
> pt.bg=par("bg"), cex=1.5, lty=1, type="o", gap=0, sfrac=0.005,
> xlim=c(-21,340),xaxp=c(-20,320,11), xlab="Time (min)", ylim=c(0,12),
> yaxp=c(0,12,11), ylab="Arterial Plasma Acetaminophen (µg/mL)", las=1,
> font.lab=2, add=TRUE)
>
> Cheers
> Joris
>
> On Sat, Jun 5, 2010 at 6:09 PM, beloitstudent <[hidden email]<http://user/SendEmail.jtp?type=node&node=2244611&i=0>>
> wrote:
>
> >
> > Hello all,
> >
> > I am an undergraduate student who is having syntax issues trying to get
> > error bars on my graph.
> >
> > This is the data, which I assigned the name "Saline" to.
> >  Time       Average       SEM
> > 1   -20      0.000000     0.0000000
> > 2
> > 3    30      0.000000     0.0000000
> > 4    45      3.227902     0.7462524
> > 5    60      5.066664     1.1623944
> > 6    80      6.107491     1.5027762
> > 7   110     6.968231     1.3799637
> > 8   140     7.325713     1.2282053
> > 9   200     7.875194     1.1185175
> > 10  260    6.513927     0.5386359
> > 11  320    4.204342     0.6855906
> >
> > This is the command that I typed in to get my error bars.
> >
> > plotCI(x=Saline [,1],y=Saline [,2], uiw=Saline [,3], liw=uiw, err=y,
> pch=21,
> > pt.bg=par("bg"), cex=1.5, lty=1, type="o", gap=0, sfrac=0.005,
> > xlim=c(-21,340),xaxp=c(-20,320,11), xlab="Time (min)", ylim=c(0,12),
> > yaxp=c(0,12,11), ylab="Arterial Plasma Acetaminophen (µg/mL)", las=1,
> > font.lab=2, add=TRUE)
> >
> > And this is the error message I keep getting
> > Error in plotCI(x = Saline[, 1], y = Saline[, 2], uiw = Saline[, 3], liw
> =
> > uiw,  :
> >  object 'uiw' not found
> > In addition: Warning message:
> > In if (err == "y") z <- y else z <- x :
> >  the condition has length > 1 and only the first element will be used
> >
> > Now, to me, the command seems correct.
> > I want the error bars to show up where the points on my graph are...so
> the x
> > coordinates should be my time (aka Saline [1]) and the y coordinates
> should
> > be my Averages (aka Saline [2])  and my upper and lower limits to my
> > confidence interval should be the SEM from Saline [3], but something is
> > wrong with this and I cannot figure out what it is.  If anyone has
> > suggestions I would be very grateful.  Thanks for your help!
> >
> > beloitstudent
> > --
> > View this message in context:
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> http://www.R-project.org/posting-guide.html
> > and provide commented, minimal, self-contained, reproducible code.
> >
>
>
>
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