[R] data manipulation: getting mean value every 5 rows

[Federico Calboli]

Dear All, 

thanks for exceptional and speedy help. In particular, thanks to J. R.
Lockwood, Sue Paul, Spencer Graves, Dennis J. Murphy and Tony Plate. 

regards,

Federico Calboli

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Federico C.F. Calboli

Department of Biology
University College London
Room 327
Darwin Building
Gower Street
London
WClE 6BT

Tel: (+44) 020 7679 4395 
Fax (+44) 020 7679 7096
f.calboli at ucl.ac.uk