On Sep 29, 2010, at 14:25 , Dennis Murphy wrote:
>
> test.summary[[1]][, 5][1]
>
> You mean that wasn't obvious? :)
Worse, it doesn't actually work...
> test.summary <- summary(npk.aovE)
> test.summary[[1]][, 5]
Error in `[.default`(test.summary[[1]], , 5) :
incorrect number of dimensions
> test.summary$"Error: block"[[1]][, 5]
[1] 0.5252361 NA
> test.summary[[1]][[1]][, 5]
[1] 0.5252361 NA
I.e., you need an extra list extraction operator. The data structure goes
List of 2
$ Error: block :List of 1
..$ :Classes ‘anova’ and 'data.frame': 2 obs. of 5 variables:
.. ..$ Df : num [1:2] 1 4
.. ..$ Sum Sq : num [1:2] 37 306
...
and the intermediate list has class ("summary.aov","listof"). I believe the
point is that you can have a matrix LHS and get a table for each of its columns.
--
Peter Dalgaard
Center for Statistics, Copenhagen Business School
Solbjerg Plads 3, 2000 Frederiksberg, Denmark
Phone: (+45)38153501
Email: pd....@cbs.dk Priv: pda...@gmail.com
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