library(gplots)
?barplot2
should give you what you want.
--- Katherine Jones <[EMAIL PROTECTED]>
wrote:
> Apologies if this has been asked before. I am having
> trouble
> understanding the R mailing list never mind R!
>
> I am relatively new to R having migrated from
> Minitab and SPSS. I
> have managed to do some more complicated statistics
> such as
> hierarchical partitioning of variance on an 80,000
> record dataset but
> have to admit that drawing a simple bar plot I could
> do by hand is
> proving extremely difficult!
>
> I have Crawley's 'The R book' which is proving a
> big help, but still
> does not provide me with all of the information I
> need.
>
> What I want to do:-
> I have a small dataset, with 'rate' as the dependent
> variable (y axis
> variable) and two groups ('cat' and 'box') which I
> have calculated
> the mean and standard error for and would like to
> display as a bar
> plot. I would like to display the standard error for
> each group NOT a
> pooled standard error (i.e. error bars will be
> different heights on
> the two bars). In the Crawley book, he just repeats
> the same error
> bars across all groups, and I don't know how to
> specify the different
> error for each bar.
>
> What I have managed to do so far:-
> -calculate mean and standard error
> -plots means with confidence intervals
> -plot means as bar plot but with no error bars or
> confidence intervals
> -everything except what I want to do!
>
> I have learnt a lot about R but it is getting rather
> frustrating that
> I can do complex GLMs but cannot do a simple plot in
> 4 hours! I have
> migrated to R because I like the way it can do
> almost anything and
> because I'm trying to go almost completely freeware
> as everytime I
> move institution I run into trouble with getting
> software licenses
> which also tend to be expensive. However, I'm not
> the most computer
> literate person and have grown up with 'menus' and
> 'windows'.
>
> Any help much appreciated as it will save me much
> time and frustration!
>
> Dr. Katherine Jones
> Department of Biology,
> Carleton University
>
> ______________________________________________
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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.
>
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