[R] Problems extracting p-value from summary(aov(...))

syrvn mentor_ at gmx.net
Wed Sep 29 12:47:03 CEST 2010


Hi,

I did a aov and used summary to obtain the p-value. I tried many ways to
extract the p-value from
the summary result but failed. Among others I tried the following:



> test.summary <-
> summary(aov(data[,1]~time.points+Error(subject/time.points)))
> test.summary

Error: subject
          Df  Sum Sq  Mean Sq F value Pr(>F)
Residuals  9 0.27467 0.030518               

Error: subject:time.points
            Df   Sum Sq   Mean Sq F value  Pr(>F)  
time.points  2 0.018563 0.0092814  3.1777 0.06578 .
Residuals   18 0.052574 0.0029208                  
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1 
> 
> as.matrix(test.summary[[1]][,5])
Error in `[.default`(test.summary[[1]], , 5) : 
  incorrect number of dimensions
> test.summary$"Error: Within"[[1]]$"Pr(>F)"
NULL
> test.summary[[2]][,5]
Error in `[.default`(test.summary[[2]], , 5) : 
  incorrect number of dimensions
> 


Any advise?
Cheers
-- 
View this message in context: http://r.789695.n4.nabble.com/Problems-extracting-p-value-from-summary-aov-tp2718726p2718726.html
Sent from the R help mailing list archive at Nabble.com.



More information about the R-help mailing list