If the x-axis variable is really a factor, xYplot will not handle it.
You probably need a dot chart instead (see Hmisc's Dotplot).
Note that it is unlikely that the confidence intervals are really
symmetric.
Frank
On Tue, 27 Jul 2010, Kang Min wrote:
> Hi,
>
> I'm trying to plot a graph with error bars using xYplot in the Hmisc
> package. My data looks like this.
>
> mort stand site type
> 0.042512776 0.017854525 Plot A ST
> 0.010459803 0.005573305 PF ST
> 0.005188321 0.006842107 MSF ST
> 0.004276068 0.011592129 YSF ST
> 0.044586495 0.035225266 Plot A LD
> 0.038810662 0.037355408 PF LD
> 0.027567430 0.020523820 MSF LD
> 0.024698872 0.020320976 YSF LD
>
> Having read previous posts on xYplot being unable to plot x-axis as
> factors, I used numericScale, but I still get this error.
>
> Error in label.default(xv, units = TRUE, plot = TRUE, default >
as.character(xvname), :
> the default string cannot be of length greater then one
>
> I used:
>
> xYplot(cbind(mort, mort + stand, mort - stand) ~ numericScale(site) |
> type, method="bars")
>
> Am I missing something or doing something wrong?
>
> Thanks.
> KM
>
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