[R] list of frames without first element

[Uwe Ligges]

Luis Rideau Cruz wrote:

> R-help,
> 
> I have a list of several data frames.
> 
> I want to compute the "rowSums" of the columns of these data frames but  first one.

... "but first data.frame" or "but first column"?

"but first data.frame":
  lapply(my.list[-1], rowSums)

"but first column":
  lapply(my.list, function(x) rowSums(x[,-1]))

Uwe Ligges


> 
> Something like this 
> 
>                     lapply(my.list,rowSums)
> 
> Thank you
> 
> 
> Luis Ridao Cruz
> Fiskirannsóknarstovan
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