[R] xYplot error

[Frank Harrell]

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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