[R] Multiply List by a Numeric
ehlers at ucalgary.ca
Mon Aug 24 18:16:32 CEST 2009
lapply(abc, function(x) x*3)
Brigid Mooney wrote:
> I apologize for what seems like it should be a straighforward query.
> I am trying to multiply a list by a numeric and thought there would be a
> straightforward way to do this, but the best solution I found so far has a
> for loop.
> Everything else I try seems to throw an error "non-numeric argument to
> binary operator"
> Consider the example:
> a <- 1
> b <- 1:2
> c <- 1:3
> abc <- list(a,b,c)
> To multiply every element of abc by a numeric, say 3, I wrote a for-loop:
> for (i in 1:length(abc))
> abc[[i]] <- 3*abc[[i]]
> Is this really the simplest way or am I missing something?
> [[alternative HTML version deleted]]
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> and provide commented, minimal, self-contained, reproducible code.
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