On Thu, 2008-08-28 at 07:39 -0400, stephen sefick wrote:
> names, colnames, rownames <- list of names
> I think it depends on what you are renaming?
Those alter the dimnames of objects that have them, not the names of the
objects themselves.
I think a short answer to the question is no. There is
names, colnames, rownames <- list of names
I think it depends on what you are renaming?
Stephen
On Thu, Aug 28, 2008 at 4:03 AM, Williams, Robin
<[EMAIL PROTECTED]> wrote:
> Hi,
> Is there any quick and easy way to rename a number of objects, without
> having to rename each one individually and
Hi,
Is there any quick and easy way to rename a number of objects, without
having to rename each one individually and then remove the old one? And
if so, is there anything I can do to adjust the associated comments
accordingly?
Thanks for any help,
Robin Williams
Met Office summer intern - Heal
You might be able to just read in that single column rather than
read the file in chunks by using colClasses arg of read.table
with "NULL" for all columns except the one you want.
The sqldf package is another way -- see example 6 on the home
page. You specify what you want using SQL:
http://sqld
Thank you all for your enlightening replies.
Hadley mentioned first that a mere assignment in R does not double storage.
Hence once solution is:
y <- x
rm(x)
Gabor gave a deeper solution which permits assigning a second name:
makeActive Binding("y",function() x, .GlobalEnv)
The reason for my qu
On Mon, 3 Mar 2008, Nordlund, Dan (DSHS/RDA) wrote:
[..., quoting Hadley Wickham]
gc()
>>> used (Mb) gc trigger (Mb) max used (Mb)
>>> Ncells 133095 3.6 35 9.4 35 9.4
>>> Vcells 87049 0.7 786432 6.0 478831 3.7
a <- runif(1e7)
gc()
>>>
> -Original Message-
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf Of Rolf Turner
> Sent: Monday, March 03, 2008 4:37 PM
> To: hadley wickham
> Cc: r-help; [EMAIL PROTECTED]
> Subject: Re: [R] renaming objects
>
>
> On 4/03/2008, at
On 4/03/2008, at 11:48 AM, hadley wickham wrote:
> On Mon, Mar 3, 2008 at 4:37 PM, Rolf Turner
> <[EMAIL PROTECTED]> wrote:
>>
>> On 4/03/2008, at 10:38 AM, Ericka Lundström wrote:
>>
>>> On 03/03/2008, at 22.20, [EMAIL PROTECTED] wrote:
Is there a way to rename R objects?
I am looki
or, in other terms:
> set.seed(1)
> x <- runif(1e7)
> x.add <- tracemem(x)
> y <- x
> y.add <- tracemem(y)
> identical(x.add, y.add)
[1] TRUE
ie, both objects have the same memory address - therefore, not a copy:
> x.add
[1] "<0x200>"
> y.add
[1] "<0x200>"
now, observe what happens whe
5:48 PM
To: Rolf Turner
Cc: r-help; [EMAIL PROTECTED]
Subject: Re: [R] renaming objects
On Mon, Mar 3, 2008 at 4:37 PM, Rolf Turner <[EMAIL PROTECTED]> wrote:
>
> On 4/03/2008, at 10:38 AM, Ericka Lundström wrote:
>
> > On 03/03/2008, at 22.20, [EMAIL PROTECTED] wrote:
>
This does not really answer your question but the following
lets you refer to an object by a second name although the object
still has its original name as well.
> a <- 3
> makeActiveBinding("b", function() a, .GlobalEnv)
NULL
> b
[1] 3
> a <- 4
> b
[1] 4
On Mon, Mar 3, 2008 at 4:20 PM, <[EMAIL
On Mon, Mar 3, 2008 at 4:37 PM, Rolf Turner <[EMAIL PROTECTED]> wrote:
>
> On 4/03/2008, at 10:38 AM, Ericka Lundström wrote:
>
> > On 03/03/2008, at 22.20, [EMAIL PROTECTED] wrote:
> >> Is there a way to rename R objects?
> >> I am looking for a way to rename objects
> >> without making new o
On 4/03/2008, at 10:38 AM, Ericka Lundström wrote:
> On 03/03/2008, at 22.20, [EMAIL PROTECTED] wrote:
>> Is there a way to rename R objects?
>> I am looking for a way to rename objects
>> without making new objects.
>>
>> #For example:
>> x = c(1:40)
>> # I wish to use a function to rename x, al
On 03/03/2008, at 22.20, [EMAIL PROTECTED] wrote:
> Is there a way to rename R objects?
> I am looking for a way to rename objects
> without making new objects.
>
> #For example:
> x = c(1:40)
> # I wish to use a function to rename x, already created, to y,
> perhaps by
> obj.rename(x,y)
> # or
>
Is there a way to rename R objects?
I am looking for a way to rename objects
without making new objects.
#For example:
x = c(1:40)
# I wish to use a function to rename x, already created, to y, perhaps by
obj.rename(x,y)
# or
obj.rename("x","y")
There are numerous examples of renaming
variables
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