R help - Jan 2013 - change confidence interval line length in barplot2 (plotrix package)

Hi,

is there any way to change the width of the horizontal line of confidence
intervals
in the barplot2 function in the plotrix package (independent of the width of the
bars)?


example code:

library(plotrix)
# Example with confidence intervals and grid
hh <- t(VADeaths)[, 1]
mybarcol <- "gray20"
ci.l <- hh * 0.85
ci.u <- hh * 1.15
mp <- barplot2(hh, beside = TRUE,
        col = c("lightblue", "mistyrose",
                "lightcyan", "lavender"),
        legend = colnames(VADeaths), ylim = c(0, 20),
        main = "Death Rates in Virginia", font.main = 4,
        sub = "Faked 95 percent error bars", col.sub = mybarcol,
        cex.names = 1.5, plot.ci = TRUE, ci.l = ci.l, ci.u = ci.u)



thanks!

There does not appear to be any such function as barplot2 in
the current version (3.4-5) of the plotrix package.  Moreover
I can find no reference to such a function in the "NEWS" for
plotrix.

     cheers,

         Rolf Turner

On 01/23/2013 07:28 AM, Martin Batholdy wrote:
> Hi,
>
> is there any way to change the width of the horizontal line of confidence
intervals
> in the barplot2 function in the plotrix package (independent of the width
of the bars)?
>
>
> example code:
>
> library(plotrix)
> # Example with confidence intervals and grid
> hh <- t(VADeaths)[, 1]
> mybarcol <- "gray20"
> ci.l <- hh * 0.85
> ci.u <- hh * 1.15
> mp <- barplot2(hh, beside = TRUE,
>          col = c("lightblue", "mistyrose",
>                  "lightcyan", "lavender"),
>          legend = colnames(VADeaths), ylim = c(0, 20),
>          main = "Death Rates in Virginia", font.main = 4,
>          sub = "Faked 95 percent error bars", col.sub = mybarcol,
>          cex.names = 1.5, plot.ci = TRUE, ci.l = ci.l, ci.u = ci.u)
>

On Jan 22, 2013, at 10:28 AM, Martin Batholdy wrote:
> Hi,
> 
> is there any way to change the width of the horizontal line of confidence
intervals
> in the barplot2 function in the plotrix package (independent of the width
of the bars)?
> 
> 
> example code:
> 
> library(plotrix)
> # Example with confidence intervals and grid
> hh <- t(VADeaths)[, 1]
> mybarcol <- "gray20"
> ci.l <- hh * 0.85
> ci.u <- hh * 1.15
> mp <- barplot2(hh, beside = TRUE,
>        col = c("lightblue", "mistyrose",
>                "lightcyan", "lavender"),
>        legend = colnames(VADeaths), ylim = c(0, 20),
>        main = "Death Rates in Virginia", font.main = 4,
>        sub = "Faked 95 percent error bars", col.sub = mybarcol,
>        cex.names = 1.5, plot.ci = TRUE, ci.l = ci.l, ci.u = ci.u)
When I did an sos::findFn("barplot2") search to locate the
"real" `barplot2` O alos noted in the same package (gplots) a function
named `ooplot`. It calls itself an extenstion of barplot2 and has a ci.lwd
argument. Might save you the time of doing what I thought might be needed,
hacking te code.

-- 
David Winsemius
Alameda, CA, USA