Frank E Harrell Jr Professor and Chairman School of Medicine
Department of Biostatistics Vanderbilt University
On Wed, 28 Jul 2010, Kang Min wrote:
Hi Frank,
Thanks for the suggestion. using numericScale() does work for Dotplot,
but there're still a few issues:
1. My factor names are Plot A, PF, MSF, and YSF, so numericScale turns
that into 3, 2, 1, 4 and the x-axis is plotted 1, 2, 3, 4. Is there
any way I can retain the same order on the graph?
Not sure why you are using numericScale. You can use the original
factor variable. If you need to re-order its levels for plotting
using reorder.factor.
>
2. I can't get the error bars displayed even after using
method="bars", only the mean, lower and upper bounds of the data as
points.
This the line I used: Dotplot(cbind(mort, mort + stand, mort - stand)
~ numericScale(site) | type, data = mort, method="bands")
That looks OK but I can't test it right now. Please continue to have
a look, and if you still don't see the problem provide a tiny
reproducible example with self-contained data I can access.
Frank
>
Thanks for your help.
KM
On Jul 27, 9:58 pm, Frank Harrell <f.harr...@vanderbilt.edu> wrote:
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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