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...es in rows where y=1 for (e.g.) sim3, this gives good results diso[y==1,5] # but x is not a numeric class and the following gives an error: diso[x==1,5] # since class(y) # "numeric" class(x) # "S4" so how do I convert x to "numeric"? Many thanks in advance!! Aad Termorshuizen senior product manager bodemkwaliteit / soil quality Blgg, Nieuwe kanaal 7F, 6709 PA Wageningen, The Netherlands tel. +31-652002192, e-mail aad.termorshuizen@blgg.nl, internet www.blgg.nl ________________________________________________________________________________________ Disclaimer: Dit e-m...

# PROBLEM WITH ABLINE # I have a question about a seemingly imprecise abline figure which I have come accross now a few times. # After reading variables a and b... a<-c(3729,1796,1956,5177,3201,3138,4265,3042,3745,2060,5713,6811,4184,1221,4700,3171,8913,5565,5500,2428,4841,10428,11197,5946,2783,4842)