[R] change confidence interval line length in barplot2 (plotrix package)

2013-01-22 Thread Martin Batholdy
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!
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Re: [R] change confidence interval line length in barplot2 (plotrix package)

2013-01-22 Thread Rolf Turner



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)



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Re: [R] change confidence interval line length in barplot2 (plotrix package)

2013-01-22 Thread David Winsemius

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

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Re: [R] change confidence interval line length in barplot2 (plotrix package)

2013-01-22 Thread Martin Batholdy
Ok, I have to apologize,
I confused the packages.

It's the function barplot2 from the gplots package!


  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.

Unfortunately ci.lwd controls the thickness of the line but not the horizontal 
width.



On Jan 22, 2013, at 21:24 , David Winsemius dwinsem...@comcast.net wrote:

 
 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
 

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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.


Re: [R] change confidence interval line length in barplot2 (plotrix package)

2013-01-22 Thread David L Carlson
Maybe a fortunate mistake. If you use the base graphics barplot(), you can
use plotCI() in plotrix to add the confidence intervals with control over
the width of the horizontal ends of the bars (if needed, the defaults are
much narrower):

out - barplot(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)
plotCI(out, hh, pch=, gap=0, ui=ci.u, li=ci.l, add=TRUE)

--
David L Carlson
Associate Professor of Anthropology
Texas AM University
College Station, TX 77843-4352

 -Original Message-
 From: r-help-boun...@r-project.org [mailto:r-help-bounces@r-
 project.org] On Behalf Of Martin Batholdy
 Sent: Tuesday, January 22, 2013 2:42 PM
 To: r-help@r-project.org
 Subject: Re: [R] change confidence interval line length in barplot2
 (plotrix package)
 
 Ok, I have to apologize,
 I confused the packages.
 
 It's the function barplot2 from the gplots package!
 
 
   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.
 
 Unfortunately ci.lwd controls the thickness of the line but not the
 horizontal width.
 
 
 
 On Jan 22, 2013, at 21:24 , David Winsemius dwinsem...@comcast.net
 wrote:
 
 
  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
 
 
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 https://stat.ethz.ch/mailman/listinfo/r-help
 PLEASE do read the posting guide http://www.R-project.org/posting-
 guide.html
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Re: [R] change confidence interval line length in barplot2 (plotrix package)

2013-01-22 Thread Marc Schwartz
On Jan 22, 2013, at 2:41 PM, Martin Batholdy batho...@googlemail.com wrote:

 Ok, I have to apologize,
 I confused the packages.
 
 It's the function barplot2 from the gplots package!
 
 
 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.
 
 Unfortunately ci.lwd controls the thickness of the line but not the 
 horizontal width.


barplot2() in gplots uses a hard coded width for the CI's, which is 50% of the 
bar width, so it is a consistent proportion.

You could hack the code or simply use base graphics barplot() along with either 
?segments or perhaps more easily, ?arrows, which would give you more 
flexibility.

Compare:

mp - barplot(1:5)
arrows(mp, 1:5 + 0.5, mp, 1:5 - 0.5, code = 3, angle = 90, length = 0.1)

with:

mp - barplot(1:5)
arrows(mp, 1:5 + 0.5, mp, 1:5 - 0.5, code = 3, angle = 90, length = 0.25)

where the 'length' argument to arrows() defines the width of the upper and 
lower boundary lines.

There are a fair number of other functions around that can add CI's to plots as 
well and a search of the archives should bear fruit.

Regards,

Marc Schwartz


 
 On Jan 22, 2013, at 21:24 , David Winsemius dwinsem...@comcast.net wrote:
 
 
 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


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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.