On Nov 30, 2010, at 1:49 PM, Prof. John C Nash wrote:
I spent more time than I should have debugging a script because I
wanted
x<-seq(0,100)*0.1
but typed
x<-seq(O:100)*0.1
seq(0:100) yields 1 to 101,
Clearly my own brain to fingers fumble, but possibly one others may
want to avoid it.
I discovered some flakey code (that ran without syntactic error and
sometimes even without semantic error) that was intended to add a risk
estimate from a number of completed years of exposure to a fractional
year:
sum(q[1:4] + frac*q[5])
... looked to my brain as sensible, but was actually adding the
fractional risk to each of the q[1:4]'s before summation occurred.
(Should have been ...
sum(q[1:4] , frac*q[5])
--
David Winsemius, MD
West Hartford, CT
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