On Mon, 14 Apr 2008, Gopi Goswami wrote:
> Dear All,
>
>
> Thanks a lot for your helpful comments (e.g., NAMED, ExpressionSet,
> DNAStringSet).
>
>
> Observations and questions ::
>
> ooo For a data.frame dd and a list ll with same contents to being with,
> the following operations show signific
Hi Gopi
"Gopi Goswami" <[EMAIL PROTECTED]> writes:
> Hi there,
>
>
> Problem ::
> When one tries to change one or some of the columns of a data.frame, R makes
> a copy of the whole data.frame using the '*tmp*' mechanism (this does not
> happen for components of a list, tracemem( ) on R-2.6.2 says
Gopi Goswami wrote:
> Hi there,
>
>
> Problem ::
> When one tries to change one or some of the columns of a data.frame, R makes
> a copy of the whole data.frame using the '*tmp*' mechanism (this does not
> happen for components of a list, tracemem( ) on R-2.6.2 says so).
>
>
> Suggested solution ::
Gopi Goswami wrote:
> Hi there,
>
>
> Problem ::
> When one tries to change one or some of the columns of a data.frame, R makes
> a copy of the whole data.frame using the '*tmp*' mechanism (this does not
> happen for components of a list, tracemem( ) on R-2.6.2 says so).
>
>
> Suggested solution ::
