Dear list,
When I try to use lines.formula with subset and another argument I
get an error.
e.g.
x<-1:5
y<-c(1,3,NA,2,5)
plot(y~x, type="n") # set up frame
lines(y~x, subset=!is.na(y)) # works OK
lines(y~x, type="o", col="blue") # works OK
# but
lines(y~x, subset=!is.na(y), col="red") # gives an error:
Error in if (length(x) == l) x[s] else x : argument is of length zero
Why does this happen?
With thanks,
John
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John Field Consulting Pty Ltd
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Phone 08 8332 5294 or 0409 097 586
Fax 08 8332 1229
Email [EMAIL PROTECTED]
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