Hello, Long Vo,
take a look at the help page of split or directly at
str(Y)
They tell you that Y is a list, and list components are indexed using
"[[":
mean(Y[[4]])
should do what you want.
Regards -- Gerrit
This does what I needed. However, as the output is a list object, is there
any way to apply a function to such object? For example if I want to compute
the mean for the 4th subvectors, I can't simply use:
#####
Y=split(X,as.numeric(gl(length(X),3,length(X))))
mean(Y[4])
#####
as the error message shows "argument is not numeric or logical"
--
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