R help - Jun 2009 - an idiom to handle i'th element of a set of lists simultaneously

Hi, I have 3 lists, x, y, z and I'd like to perform a calculation over all
the lists simultaneously. If it were a single list I could use lapply, but
for more than one list I'm using a for loop. Is there an idiom that would
let me use something like lapply, but the function specified to lappy would
have access to an element from each list? (In Python, I would have used for
a,b,c in zip(x,y,z): ...)

Thanks,

-- 
Rajarshi Guha

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If I understand, you can use rapply for this.

On Tue, Jun 23, 2009 at 9:11 AM, Rajarshi Guha
<rajarshi.guha@gmail.com>wrote:
> Hi, I have 3 lists, x, y, z and I'd like to perform a calculation over
all
> the lists simultaneously. If it were a single list I could use lapply, but
> for more than one list I'm using a for loop. Is there an idiom that
would
> let me use something like lapply, but the function specified to lappy would
> have access to an element from each list? (In Python, I would have used for
> a,b,c in zip(x,y,z): ...)
>
> Thanks,
>
> --
> Rajarshi Guha
>
>        [[alternative HTML version deleted]]
>
> ______________________________________________
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> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>


-- 
Henrique Dallazuanna
Curitiba-Paraná-Brasil
25° 25' 40" S 49° 16' 22" O

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Thanks to all who replied. mapply does the trick

On Tue, Jun 23, 2009 at 8:11 AM, Rajarshi Guha
<rajarshi.guha@gmail.com>wrote:
> Hi, I have 3 lists, x, y, z and I'd like to perform a calculation over
all
> the lists simultaneously. If it were a single list I could use lapply, but
> for more than one list I'm using a for loop. Is there an idiom that
would
> let me use something like lapply, but the function specified to lappy would
> have access to an element from each list? (In Python, I would have used for
> a,b,c in zip(x,y,z): ...)
>
> Thanks,
>
> --
> Rajarshi Guha
>


-- 
Rajarshi Guha

	[[alternative HTML version deleted]]