It is a 'List of 1', so you want tmp[[1]] which you can access as a
data frame. As the help file says
For a fit with a single stratum the result will be a list of
ANOVA tables, one for each response (even if there is only one
response): the tables are of class '"anova"' inheriting from class
'"data.frame"'. They have columns '"Df"', '"Sum Sq"', '"Mean
Sq"', as well as '"F value"' and '"Pr(>F)"' if there are non-zero
residual degrees of freedom. There is a row for each term in the
model, plus one for '"Residuals"' if there are any.
and you have a single response so select the only element of the
list.
On Mon, 19 Oct 2009, Liviu Andronic wrote:
Dear all
How do I access individual elements of a "summary.aov" object?
data(iris)
AnovaModel.1 <- aov(Sepal.Length ~ Species, data=iris)
tmp <- summary(AnovaModel.1)
tmp
Df Sum Sq Mean Sq F value Pr(>F)
Species 2 63.2 31.6 119 <2e-16 ***
Residuals 147 39.0 0.3
---
Signif. codes: 0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
str(tmp)
List of 1
$ :Classes 'anova' and 'data.frame': 2 obs. of 5 variables:
..$ Df : num [1:2] 2 147
..$ Sum Sq : num [1:2] 63.2 39
..$ Mean Sq: num [1:2] 31.606 0.265
..$ F value: num [1:2] 119 NA
..$ Pr(>F) : num [1:2] 1.67e-31 NA
- attr(*, "class")= chr [1:2] "summary.aov" "listof"
tmp$1
Error: unexpected numeric constant in "tmp$1"
tmp$"1"
NULL
tmp$""
NULL
Thank you
Liviu
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