[R] Barplots and error indicators: Some R-Code
Frank E Harrell Jr
f.harrell at vanderbilt.edu
Fri Jun 18 20:37:15 CEST 2004
Rau, Roland wrote:
> Dear all,
>>From: Frank E Harrell Jr [SMTP:f.harrell at vanderbilt.edu]
>>Sent: Friday, June 18, 2004 4:48 PM
>>To: dieter.haering at fal.admin.ch
>>Cc: r-help at stat.math.ethz.ch
>>Subject: Re: [R] Barplots and error indicators: Some R-Code
>>Bar charts have many problems as pointed out in Bill Cleveland's book
>>Elements of Graphing Data. Bar charts with error bars have even more
>>problems. I prefer dot plots with error bars. The Dotplot function in
> it might be a bit off-topic but can anyone suggest some online
> material concerning good graph / bad graph examples?
> I imagine something like:
> a) These are the data and this is the main feature of the data which
> should be represented.
> b) This is a bad idea how to represent a)
> c) This is a good idea how to represent a)
> I know there are excellent books by Cleveland and also by Tufte
> ("The Elements of Graphing Data", "The Visual Display of Quantitative
> Information", "The cognitive style of PowerPoint", ...) but it would be
> sometimes just more convenient to refer to some online material.
> Maybe even some online material about the problems of barplots with
> error bars?
> Thank you very much,
This doesn't cover everything you want but look at
Frank E Harrell Jr Professor and Chair School of Medicine
Department of Biostatistics Vanderbilt University
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