[R] residuals() with missing data, alignment to original data set
ripley at stats.ox.ac.uk
Tue Jan 14 18:41:03 CET 2003
na.action=na.exclude does this.
On Tue, 14 Jan 2003 klaus.thul at infineon.com wrote:
> I have a data frame and want to do the following.
> Do a regression of one variable versus another:
> fit <- lm(a ~ b)
> Then I would like to plot the residuals of this fit versus a third variable:
> bwplot(residuals(fit) ~ group)
> This fails, if a or b contain NAs, because the data in the residuals() -
> vector are not aligned anymore to the data in the original data frame.
> Is there a way to solve this issue?
> Regards and thanks for your help
> R-help at stat.math.ethz.ch mailing list
Brian D. Ripley, ripley at stats.ox.ac.uk
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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