[R] error bars on xy plots and barplots and histograms

[Frank E Harrell Jr]

Andrew Robinson wrote:
> Chris,
> 
> computation of confidence intervals is left to the user.  Showing them
> can be achieved using the arrows() function.
> 
> I hope that this helps,
> 
> Andrew

Also do ?xYplot after installing the Hmisc package. -Frank

> 
> On Thu, Oct 06, 2005 at 08:19:27AM -0600, Chris Buddenhagen wrote:
> 
>>Dear all
>>
>>I have yet to find code for making and showing error bars. Is there some
>>idea that the simple presentation of confidence intervals is not " good
>>statistics"?
>>
>>Any leads appreciated.
>>
>>Chris Buddenhagen, Botany Department, Charles Darwin Research Station, Santa
>>Cruz,Galapagos. Mail: Charles Darwin Foundation, Casilla 17-01-3891 Avenida
>>6 de Diciembre N36-109 y Pasaje California Quito, ECUADOR
>> 
>>
>>
>>
>>
>>
>>
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> 


-- 
Frank E Harrell Jr   Professor and Chair           School of Medicine
                      Department of Biostatistics   Vanderbilt University