From: Evgeniy Kachalin <ka4alin_at_yandex.ru>

Date: Fri 02 Dec 2005 - 03:40:14 EST

R-help@stat.math.ethz.ch mailing list

https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Fri Dec 02 04:19:26 2005

Date: Fri 02 Dec 2005 - 03:40:14 EST

Martin Maechler пишет:

> Boxplots were invented by John W. Tukey and I think should be

*> counted among the top "small but smart" achievements from the
**> 20th century. Very wisely he did *not* use mean and standard deviations.
**>
**> Even though it's possible to draw boxplots that are not boxplots
**> (and people only recently explained how to do this with R on this
**> mailing list), I'm arguing very strongly against this.
**>
**> If I see a boxplot - I'd want it to be a boxplot and not have
**> the silly (please excuse) 10%--------90% whiskers which
**> declare 20% of the points as outliers {in the boxplot sense}.
**>
**> If you want the mean +/- sd plot, do *not* misuse boxplots
**> for them, please!
**>
*

So I analize genetics data. I have some factor (gene variant, c(1,2,3)) and the quantitative variable corresponding to that factor. How do I visualize this situation? Compare mean of samples corresponding to factor values?

Should boxplot support 'mean-in-the-middle', it would fit my needs ideally. How do I plot mean +/- SD plot?

Also there is a way to rewrite boxplot.stats and replace "fivenum" there for self-made function. Then I would need to write self-made boxplot.formula (or boxplot.default?) function. And all this stuff would not be configurable. I'm still novice in R, so I need simple way to pre-visualize my data and estimate approximate result.

--

Evgeniy, ICQ 38317310.

R-help@stat.math.ethz.ch mailing list

https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Fri Dec 02 04:19:26 2005

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