R help - Mar 2010 - decomposing the error term into time-specific &indiviual specific effect + transitory term

hi all!

i am a beginner in R so i need a command that i couldnt find on the net.

i need to transform the error term and i should decompose it  into
time-specific, indiviual specific effect and transitory term like here (åit
=ui + vt + wit)

the individual effect in my model is called "stno" and time effect is
called
"year", can somebody send me the command to decompose (without
forgetting
that i am a beginner)?

Thank you very much!

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