[R] re peated measures

[pompon]

Hi,

I am performing a repeated measures 2-way ANOVA  to assess the influence of
plant and leaf on aphid fecundity. Fecundity is measured for each aphid on a
single leaf.
Here is what I typed.

wingless <- reshape(Wingless,
                            varying =
list(c("d0","d1","d2","d3","d4","d5","d6","d7","d8","d9","d10","d11","d12","d13","d14","d15","d16")),
                            v.names = c("fecundity"), timevar = "time",
                            direction = "long")

wingless.aov <- aov(fecundity ~ factor(time) * clip.cage * plant +
Error(factor(id)), data = wingless)

summary(wingless.aov)

and I obtained

Error: factor(id)
                       Df Sum Sq Mean Sq F value  Pr(>F)  
factor(time)            4 56.789  14.197  3.0613 0.05925 .
clip.cage               1 14.149  14.149  3.0509 0.10621  
plant                   1  3.251   3.251  0.7010 0.41880  
factor(time):clip.cage  1  0.304   0.304  0.0655 0.80240  
clip.cage:plant         1 17.114  17.114  3.6903 0.07880 .
Residuals              12 55.652   4.638                  
---
Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1 

Error: Within
                              Df Sum Sq Mean Sq F value  Pr(>F)    
factor(time)                  16 340.83   21.30 11.5222 < 2e-16 ***
factor(time):clip.cage        16  27.34    1.71  0.9242 0.54195    
factor(time):plant            16  46.36    2.90  1.5673 0.07783 .  
factor(time):clip.cage:plant  16  24.50    1.53  0.8281 0.65304    
Residuals                    255 471.44    1.85                    
---
Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1

I don't understand why I have the factor(time) inmy between subject results,
whereas with a similar set of data I don't. 

Thank you very much,
Julien Pompon.
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