I have some doubt to make some analysis in R, I remember that in GLIM all analysis use glm. I have using the new Crawley's Book to help-me. How make a nested or splitplot analysis with poisson errors?? with normal errors use aov, and non-normal errors? Thanks fo all Ronaldo -- Whenever someone tells you to take their advice, you can be pretty sure that they're not using it. -- | // | \\ [*****************************][*******************] || ( ? ? ) [Ronaldo Reis J?nior ][PentiumIII-600 ] | V [UFV/DBA-Entomologia ][HD: 30 + 10 Gb ] || / \ [36571-000 Vi?osa - MG ][RAM: 128 Mb ] | /(.''`.)\ [Fone: 31-3899-2532 ][Video: SiS620-8Mb ] ||/(: :' :)\ [chrysopa at insecta.ufv.br ][Modem: Pctel-onboar] |/ (`. `'` ) \[ICQ#: 5692561 ][Kernel: 2.4.18 ] || ( `- ) [*****************************][*******************] ||| _/ \_Powered by GNU/Debian W/Sarge D+ || Lxuser#: 205366