Re: [R] define F-ratio computations with aov

anyways and one should proceed to lme4 package. aleXis Από: RICHARD M. HEIBERGER [rmh(at)temple.edu] Αποστολή: Τετάρτη, 17 Μαρτίου 2010 4:21 μμ Προς: Galanidis Alexandros Κοιν.: R Maillist Θέμα: Re: [R] define F-ratio computations with aov Please look

[R] define F-ratio computations with aov

Greetings to all, This is my model: aov.fit-aov(Y~A+B+C+D+E+A:C+A:E) In summary(aov.fit) all F values are comptuted by eg MS(A)/MS(Residuals). This is not correct (or what I want), except for F(B) and F(A:E). I suppose P values are not correct either. Is it possible with aov to define the way

[R] presence/absence similarities

Greetings to all, I have presence/absence data for species in plots in different years. My matrices looks like that: YEAR1 sp1 sp2 sp3 sp4 11 1 0 1 21 1 1 1 31 1 0 1 41 1 0 1 51 1 0

[R] PCA and categorical data

Hi all, I' m trying to figure out if it is appropriate to do a PCA having only categorical data (not ordinal). I have only find the following quote: One method to find such relationships is to select appropriate variables and to view the data using a method like Principle Components Analysis

[R] adding rows to table

Greetings everyone, I'm trying to add a specific table or a specific number of rows (e.g.44) to a table with no success. This is my basic table head(dataA) yearplot spp prop.BDCA1DCA2DCA3DCA4 1 20001 a1 0.031079 -0.0776 -0.0009 0.0259 -0.0457 2 2000

[R] adding rows to table

Greetings everyone, I'm trying to add a specific table or a specific number of rows (e.g.44) to a table with no success. This is my basic table head(dataA) yearplot spp prop.BDCA1DCA2DCA3DCA4 1 20001a1 0.031079 -0.0776 -0.0009 0.0259 -0.0457 2