R help - Dec 2009 - Object of type 'closure' not subsettable

Hi all,

How can I overcome the error "object of type 'closure' not
subsettable"

I ran the following script
seq <- paste(seq(1914, 1916, by=1), "*.y", sep=".") #
make sequence
c <- 3 # total number of files
d2 <- file # creates dummy file

# Input sequence in loop
for (i in 1:3){
list <- list.files("~/ukcp09/txt/x.djf", seq[[i]])
file <- lapply(list, read.table)

# Calculations
mean <- (Reduce("+", file))/c
d2[[i]] <- file[[i]] - mean

Apparently, the following command is the source of the error.

d2[[i]] <- file[[i]] - mean

It works OK when I typed into the terminal the following after running 
the script.

 > for (j in 1:3) print (file[[j]]-mean)


Thanks.

Muhammad

-- 
Muhammad Rahiz  |  Doctoral Student in Regional Climate Modeling					
Climate Research Laboratory, School of Geography & the Environment	
Oxford University Centre for the Environment
South Parks Road, Oxford, OX1 3QY, United Kingdom 
Tel: +44 (0)1865-285194	 Mobile: +44 (0)7854-625974
Email: muhammad.rahiz at ouce.ox.ac.uk

On Sun, Dec 20, 2009 at 7:40 PM, Muhammad Rahiz
<muhammad.rahiz at ouce.ox.ac.uk> wrote:
> Hi all,
>
> How can I overcome the error "object of type 'closure' not
subsettable"
>
> I ran the following script
> seq <- paste(seq(1914, 1916, by=1), "*.y", sep=".")
# make sequence
> c <- 3 # total number of files
> d2 <- file # creates dummy file
 No it doesn't. It copies the object called 'file' into an object
called 'd2'. What's the object called 'file'? If you've
not created
one already, its the 'file' function that R uses to read stuff from
files. So when you do:

> d2[[i]] <- file[[i]] - mean
 you are trying to subset from d2 (and from 'file'). If I do this:

 > file[[2]]

 I get your error message:

Error in file[[2]] : object of type 'closure' is not subsettable

 So clearly you aren't doing what you think you're doing.

 Some hints:

1. Read a good introduction to R. You are making a number of
fundamental mistakes here.

2. Run each line separately and check what value you get back by printing it.

3. Don't give your objects the same name as R functions (you're using
'seq', 'file', and 'mean'). Although this may work, it
will confuse
people later...

Barry

On Dec 20, 2009, at 2:40 PM, Muhammad Rahiz wrote:
> Hi all,
>
> How can I overcome the error "object of type 'closure' not  
> subsettable"
>
> I ran the following script
> seq <- paste(seq(1914, 1916, by=1), "*.y", sep=".")
# make sequence
> c <- 3 # total number of files
> d2 <- file # creates dummy file
>
> # Input sequence in loop
> for (i in 1:3){
> list <- list.files("~/ukcp09/txt/x.djf", seq[[i]])
> file <- lapply(list, read.table)
>
> # Calculations
> mean <- (Reduce("+", file))/c
> d2[[i]] <- file[[i]] - mean
>
> Apparently, the following command is the source of the error.
>
> d2[[i]] <- file[[i]] - mean
>
> It works OK when I typed into the terminal the following after  
> running the script.
>
> > for (j in 1:3) print (file[[j]]-mean)
Generally R is able to keep straight what is a vector and what is a  
function but you are using quite a few names for vectors and lists  
which should be reserved (at least in your head) for functions. Here  
is a list of function names to avoid as object names:

c
file
list
seq
mean

Why not try being so ambiguous? ObF: Would you call your dog "dog"?


--
David Winsemius, MD
Heritage Laboratories
West Hartford, CT

Hello Everyone, I am quite new in R software.
I am doing a grofit to study growth.
I have a matrix of time with 10 weeks and 26 individuals ie 10 columns x 26
rows
and I have a data.frame with 3 columns: 1 for Individual Id (which repeats
it self, since I have 10 values for each individual correponding to each
week) the size of the individual (1 or 2) and the Length value.

I run the grofit and get the following error
Data error [-1:-3]: object type "closure" not subsettable

I have no idea what it means or if I am doing something wrong!
Could anyone help me?
Thanks


Tamara Rubilar
Lab. Bentos
Centro Nacional Patagonico
Puerto Madryn
Argentina
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