[R] Error in J[time] : invalid subscript type 'closure'

[MacQueen, Don]

In my experience, error messages that include the word "closure" almost
always mean that I have tried to do something with a function that isn't
supposed to be done with a function (undoubtedly not a technically correct
statement, but it works for me).

I think that applies here, since time is a function in the R stats package:
  > find('time')
  [1] "package:stats"

So, consistent with Berend's suggestion, the expression
   s_fun(parms, time)
is passing the time() function to the expression
   J[time]
and it makes no sense to use a function as an index to a numeric vector. I
also believe that is why the error message said, "invalid subscript type".
  

-Don

-- 
Don MacQueen

Lawrence Livermore National Laboratory
7000 East Ave., L-627
Livermore, CA 94550
925-423-1062





On 2/24/13 2:24 AM, "Berend Hasselman" <bhh at xs4all.nl> wrote:


On 24-02-2013, at 10:59, Jannetta Steyn <jannetta at henning.org> wrote:

> Hi All
> 
> I have Googled the message Error in J[time] : invalid subscript type
> 'closure', but can't quite make sense from the results that I get. What
> does it mean?
> 
> I'm trying to access an element in an array. Here is a short bit of code
> that produces the error:
> 
> s_fun <- function(parms,time) {
> 
>  with(as.list(c(parms)),{
>    print(J[time])
>  })
> }
> times = seq(from=0, to=100, by = 0.1);
> v<-14
> J<-c(rep(c(rep(0,10),rep(v,10)),5))
> parms=c(J)
> out <- s_fun(parms, time)
> 

Look at your code carefully. The error is staring you in the face.
The second argument in the call of s_fun is "time" which is nit evaluated
immediately.
You probably meant "times".

Berend

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