ddply/tapply and set function

Hi  A,
I'm unable to work out what you are using as input. Maybe:

id<-data.frame(Type=c(1,2,1,1,2),set=c(1,3,5,7,8))

but that doesn't work with your

tapply(id,Type,set)

command. Perhaps a bit more detail?

Jim



On Wed, Feb 17, 2021 at 7:48 PM A. Mani <a.mani.cms at gmail.com> wrote:

I want a data frame (derived from another data frame) of the form

Type   Set
1         {1,5, 7}
2         {3,8)
..        ....

tapply(Id,Type, set) works, but does not yield a data frame.
'set' is from package set/set6/etc
ddply does not seem to work with the function.
How should I proceed with this optimally?


Thanks and Best

A Mani

Prof.Dr.(Miss) A Mani
ASL, AMS, ISRS, CLC, CMS, MTA
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Research Scientist, Indian Statistical Institute, Kolkata
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