[R] how to delete the null elements in list

[arun]

Or,
suu[unlist(lapply(suu,length)!=0)]
#[[1]]
#[1] 1 2

#[[2]]
 #    [,1] [,2]
#[1,]    1    3
#[2,]    2    4
A.K.




----- Original Message -----
From: Rui Barradas <ruipbarradas at sapo.pt>
To: Tammy Ma <metal_licaling at live.com>
Cc: "r-help at r-project.org" <r-help at r-project.org>
Sent: Friday, January 25, 2013 8:15 AM
Subject: Re: [R] how to delete the null elements in list

Hello,

Try the following.

suu <- list(NULL, NULL, 1:2, matrix(1:4, 2))
suu[!sapply(suu, is.null)]


Hope this helps,

Rui Barradas


Em 25-01-2013 12:31, Tammy Ma escreveu:
>
> HI,
>
> I have the list:
>
>
>> suu
> [[1]]
> NULL
>
> [[2]]
> NULL
>
> [[3]]
> item_id  prod
>   1           2
>
> [[4]]
>
> item_id prod
> 1          2
> 2          4
>
>
>
> how to delete all "NULL" elements from suu to get only
>
>> suu
>
> [[3]]
> item_id  prod
>   1           2
>
> [[4]]
>
> item_id prod
> 1          2
> 2          4
>
>
> ??
>
>
> Kind regards,
> Tammy
>
>                           
>     [[alternative HTML version deleted]]
>
> ______________________________________________
> R-help at r-project.org mailing list
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>

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