[R] computation of matrices in list of list

[kathie]

Dear Gabor Grothendieck,


thank you for your comments.

Ive already tried that. but  I've got this error message.


> Reduce("+",z)
Error in f(init, x[[i]]) : non-numeric argument to binary operator


anyway, thanks 

ps.

> is.matrix(z[[1]][[1]])
[1] TRUE

I guess the reason "Reduce" doesn't work is that it has multi-dimentional
list..



Gabor Grothendieck wrote:
> 
> See this:
> 
> https://stat.ethz.ch/pipermail/r-help/2009-August/208002.html
> 
> On Sat, Aug 22, 2009 at 11:41 AM, kathie<kathryn.lord2000 at gmail.com>
> wrote:
>>
>> Dear R users,
>>
>> I have the list as follows;
>>
>> #------------------------------------------------------
>>
>>> z
>>
>> [[1]]
>> [[1]][[1]]
>>
>> matrix(A)
>>
>> [[1]][[2]]
>>
>> matrix(B)
>>
>> [[1]][[3]]
>>
>> matrix(C)
>>
>> [[2]]
>> [[2]][[1]]
>>
>> matrix(D)
>>
>> [[2]][[2]]
>>
>> matrix(E)
>>
>> [[2]][[3]]
>>
>> matrix(F)
>>
>> #---------------------------------------------
>>
>> I'd like to compute
>>
>> matrix(A)+matrix(B)+matrix(C)+matrix(D)+matrix(E)+matrix(F)
>>
>>
>> In fact, I tried "lapply", "do.call" etc, but failed.
>>
>>
>>
>> Any suggestion will be greatly appreciated.
>>
>> Regards,
>>
>> Kathryn Lord
>>
>> --
>> View this message in context:
>> http://www.nabble.com/computation-of-matrices-in-list-of-list-tp25094875p25094875.html
>> Sent from the R help mailing list archive at Nabble.com.
>>
>> ______________________________________________
>> R-help at r-project.org mailing list
>> 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.
>>
> 
> ______________________________________________
> R-help at r-project.org mailing list
> 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.
> 
> 

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