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 (?g/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