R help - Jul 2014 - ANOVA for RCBD, two factors: how to plot residuals?..

Hello,
I'm having problems to analyse results from a RCB Design Experiment.I have
three blocks. For each block: four treatments (factor A), randomized. And for
each factor A treatment,  I have 6 differents treatments (factor C), randomized.
myAOV=aov(response ~ factorA*factorC + Block + Error(field), data)
The model i use would be response = factorA + factorC + factorA:factorC + Block
(fixed effect) + Field (subplot, random effect).
I have some good results but my problem is the following: i would like to have a
look at the residuals distribution and the command:
residuals(myAOV)
returns a NULL object. How to do then to extract the residuals? The function
works if i take off "Error(field)" from my aov function but this
doesn't give me relevant residuals right?
Thanks a lot!



 		 	   		  
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