[R] ERROR: no applicable method for "TukeyHSD"

From: Darren Weber <darrenleeweber_at_gmail.com>
Date: Thu 09 Feb 2006 - 07:25:51 EST


Why do I see this error?

> library(stats)
> require(stats)

[1] TRUE
>
> tHSD <- TukeyHSD(aov)

Error in TukeyHSD(aov) : no applicable method for "TukeyHSD"

In case it helps:

> aov

Call:
aov(formula = roi ~ (Cue * Hemisphere) + Error(Subject/(Cue *

    Hemisphere)), data = roiDataframe)

Grand Mean: 8.195069

Stratum 1: Subject

Terms:

                Residuals
Sum of Squares   645.7444
Deg. of Freedom         7

Residual standard error: 9.604645

Stratum 2: Subject:Cue

Terms:

                     Cue Residuals
Sum of Squares  0.386987  4.015740
Deg. of Freedom        1         7

Residual standard error: 0.7574148
1 out of 2 effects not estimable
Estimated effects are balanced

Stratum 3: Subject:Hemisphere

Terms:

                Hemisphere Residuals
Sum of Squares    153.4860  827.6699
Deg. of Freedom          1         7

Residual standard error: 10.87376
1 out of 2 effects not estimable
Estimated effects are balanced

Stratum 4: Subject:Cue:Hemisphere

Terms:

                Cue:Hemisphere Residuals
Sum of Squares        5.085930  4.279707
Deg. of Freedom              1         7

Residual standard error: 0.7819122
Estimated effects are balanced
>

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