[R] Save P values calculated with anova

ONKELINX, Thierry Thierry.ONKELINX at inbo.be
Mon Nov 4 16:13:06 CET 2013


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 op 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 op r-project.org [mailto:r-help-bounces op r-project.org] Namens Anders Tisell
Verzonden: maandag 4 november 2013 15:11
Aan: r-help op 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

______________________________________________
R-help op r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
* * * * * * * * * * * * * D I S C L A I M E R * * * * * * * * * * * * *
Dit bericht en eventuele bijlagen geven enkel de visie van de schrijver weer en binden het INBO onder geen enkel beding, zolang dit bericht niet bevestigd is door een geldig ondertekend document.
The views expressed in this message and any annex are purely those of the writer and may not be regarded as stating an official position of INBO, as long as the message is not confirmed by a duly signed document.



More information about the R-help mailing list