[R] Multiple lapply get-around
andy_liaw at merck.com
Mon Aug 30 14:06:53 CEST 2004
> From: Manoj - Hachibushu Capital
> I am faced with a situation wherein I have to use multiple
> lapply's. The
> pseudo-code could be approximated to something as below:
> For each X from i=1 to n
> For each Y based on j=1 to m
> For each F from 1 to f
> Do some calculation based on Fij
> Store Xi,Yj = Fij
What does the line above mean? Are you assigning the value of Fij to _both_
Xi and Yj? Doesn't quite make sense to me...
> End For F
> End for Y
> End for X
> Is there anyway to optimize the processing logic further? I *guess*
> using the multiple lapply already optimizes the logic a little bit but
> is there anything else that could be done (apart from the obvious
> solution of writing a c-code)?
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