[R] Saving a list as a Matrix

[Pete Brecknock]

wizykid wrote:
> 
> Hi there. 
> 
> I went through the manual but I couldn't find a solution for my problem.
> 
> I have list like this one :
>> lst1
> [[1]]
> [1] 0 1 2 3
> 
> [[2]]
> [1] 0 1 5
> 
> [[3]]
> [1] 2 3 4
> 
> and I want to save it as Matrix in Matlab mat format like :
> 0 1 2 3
> 0 1 5 0
> 2 3 4 0
> 
> 
> can any body help me ? Appreciate your help and thanks in advance.
> 
> Reza
> 

Not pretty but this works ...

lst1 = list(c(0,1,2,3),c(0,1,5),c(2,3,4)) 

t(sapply(lst1, function(x) c(x,rep(0,4-length(x)))))

HTH

Pete

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