Dear all,
Thanks very much for your help. This completely clarifies my question.
Mayteo
Il giorno 23/dic/2015 17:05, "Anthoni, Peter (IMK)"
ha scritto:
> Hi,
>
> How about the following:
> foo2 <- function(s,i,j,value)
> {
> M = get(paste("M_",s,sep=""))
> M[i,j] = value
> assign(paste("M_"
> On Dec 23, 2015, at 12:44 AM, Matteo Richiardi
> wrote:
>
> I am following the example I find on ?assign:
>
> a <- 1:4
> assign("a[1]", 2)
You appear to have completely misinterpreted the intent of the authors of that
help page. The next two lines in that example (which you omitted) show
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> -Original Message-
> From: R-help [mailto:r-help-boun...@r-project.org] On Behalf Of Matteo
> Richiardi
> Sent: December 23, 2015 3:45 AM
> To: r-help@r-project.org
> Subject: [R] assigning values to elements
Hi,
How about the following:
foo2 <- function(s,i,j,value)
{
M = get(paste("M_",s,sep=""))
M[i,j] = value
assign(paste("M_",s,sep=""),M, envir = .GlobalEnv)
}
foo2("a",1,2,15)
cheers
Peter
> On 23 Dec 2015, at 09:44, Matteo Richiardi wrote:
>
> I am following the example I find on ?ass
I think this may help.
my_assign <- function(operand, value) {
assignment <- paste(operand, value, sep = "<-")
e <- parse(text = assignment)
eval.parent(e)
}
a <- rep(0,5)
> a
[1] 0 0 0 0 0
my_assign("a[2]", 7)
> a
[1] 0 7 0 0 0
my_assign("a[4]", 12)
> a
[1] 0 7 0 12 0
--
GG
15 9:45 AM
> To: r-help@r-project.org
> Subject: [R] assigning values to elements of matrixes
>
> I am following the example I find on ?assign:
>
> a <- 1:4
> assign("a[1]", 2)
>
> This appears to create a new variable named "a[1]" rather than changin
I am following the example I find on ?assign:
a <- 1:4
assign("a[1]", 2)
This appears to create a new variable named "a[1]" rather than
changing the value of the vector.
Am I missing something here? How can I assign a value to a specified
element of a vector/matrix?
Of course, my problem is sli
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