removing NULL elements from a list

Uwe Ligges · 2003-04-14T15:04:05Z

Ramon Diaz wrote: > Dear All, > > I have a list, where several components are NULL, and I'd like to obtain that > very same list without the NULL components (i.e., I do not want to unlist or > otherwise loose the rest of the list structure). I can do that with a loop, > but how could I do it without a loop? For a list L: L[!sapply(L, is.null)] Uwe Ligges

Uwe Ligges

Mon, Apr 14, 2003 8:04 AM

Ramon Diaz wrote:

For a list L:
   L[!sapply(L, is.null)]

Uwe Ligges

Thread (7 messages)

Ramon Diaz-Uriarte removing NULL elements from a list Apr 14 Uwe Ligges removing NULL elements from a list Apr 14 Brian Ripley removing NULL elements from a list Apr 14 Carlos Ortega removing NULL elements from a list Apr 14 Peter Dalgaard removing NULL elements from a list Apr 14 Peter Dalgaard removing NULL elements from a list Apr 14 Ramon Diaz-Uriarte removing NULL elements from a list: Thanks Apr 15