[R] good source for explaining input and output parameters of R functions

Roger Peng rpeng at stat.ucla.edu
Thu Apr 17 02:40:50 CEST 2003

If certain elements returned by a function are not documented, they are
unlikely to be of much use to the user.  In particular, the help page for
surf.ls() says:


     list with components

    beta: the coefficients 



       z: and others for internal use only. 

So there are other elements returned but they are only used for internal
computations or whatever.  The user will likely not need them or even be
able to use them intelligently.

If you really want to know what all of the returned values are, the best
place to look is the source code.

UCLA Department of Statistics

On Wed, 16 Apr 2003, Yan Yu wrote:

> Hello,
>    thank you all for answering my previous Qs.. I have a new Q:
>    I am wondering is there good source for explaning input and output
> parameters of R function?
>   In that aspect, I found the help documents in R is not that helpful:)
> I am struggling with trying to understand what some of the returned value
> means..
> for example, for surf.ls() function, the help in R only describes 3
> fields(the wierd thing is that those explained 3 fields are identical to
> the input) of returned value, and leave a bunch of others(e.g., like "f"
> and "wz"which looks pretty interesting, but i had no clue what they are
> about..) unexplained.
> Is there any good source if I want to understand the input and output of ,
> or how to use a particular R function?
> Many thanks,
> yan
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