Message-ID: <AA818EAD2576BC488B4F623941DA7427DFAFBDC8@inbomail.inbo.be>
Date: 2013-11-04T15:13:06Z
From: ONKELINX, Thierry
Subject: Save P values calculated with anova
In-Reply-To: <E192948D-889F-422A-AFD5-6ED42079DEA9@liu.se>
You'll need to add quotes
MyAnova$"Pr(>F)"
Or use the bracket notation
MyAnova[, "Pr(>F)"]
ir. Thierry Onkelinx
Instituut voor natuur- en bosonderzoek / Research Institute for Nature and Forest
team Biometrie & Kwaliteitszorg / team Biometrics & Quality Assurance
Kliniekstraat 25
1070 Anderlecht
Belgium
+ 32 2 525 02 51
+ 32 54 43 61 85
Thierry.Onkelinx at inbo.be
www.inbo.be
To call in the statistician after the experiment is done may be no more than asking him to perform a post-mortem examination: he may be able to say what the experiment died of.
~ Sir Ronald Aylmer Fisher
The plural of anecdote is not data.
~ Roger Brinner
The combination of some data and an aching desire for an answer does not ensure that a reasonable answer can be extracted from a given body of data.
~ John Tukey
-----Oorspronkelijk bericht-----
Van: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] Namens Anders Tisell
Verzonden: maandag 4 november 2013 15:11
Aan: r-help at r-project.org
Onderwerp: [R] Save P values calculated with anova
Hi,
I have created a mixed linear model with one fixed factor and two random factors then I would like to test if there is a significant difference between the two groups.
To do this I calculate the model with the lmer function:
> MyModel <- lmer(...)
and do a anova of the model to estimate if the F value is significant.
> MyAnova <- anova(MyModel)
And I get a summary table of the anova with F values, Pr(>F) when i try to extract this values using the $ function:
> MyAnova$Pr(>F)
I get the error message:
Error: unexpected symbol '>' in "MyAnova$Pr(>
I also get this message if I try to extract F value, Mean Sq etc But not for DF, Denom etc, so I guess it is the white space and > characters that is the problem. What should I do to get the P values so I can write them in to a file?
I am using R 3.0.2 GUI 1.62 Snow Lepard build (6558) on a Mac Mini OS X 10.9
Best regards
/Anders
Sent from Anders iPad
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