Yes, for the record, the typo in my earlier post is corrected below.
(Martin's previous "correction" both corrected and slightly changed
what I provided).
-- Bert
On Sun, May 26, 2013 at 7:43 AM, Bert Gunter wrote:
> Martin:
>
> Well, assuming I understand, one approach would be to first get th
Subject: Re: [R] avoiding eval parse with indexing
Hi,
You could use:
library(abind)
#using Berend's and Bert's example
x1 <- array(runif(9),dim=c(3,3))
x2 <- array(runif(8),dim=c(2,2,2))
z <- array(1:24,dim=2:4)
#applying your code:
eval(parse(text=paste0("x1[1",pa
unity!
Best regards,
Martin
> Оригинално писмо
>От: arun
>Относно: Re: [R] avoiding eval parse with indexing
>До: Martin Ivanov
>Изпратено на: Неделя, 2013, Май 26 18:48:33 EEST
>
>
>Hi,
>You could use:
>library(abind)
>#using Ber
[,2]
#[1,] 0.026671344 0.2116831
#[2,] 0.003903368 0.1551140
asub(z,1,1,drop=TRUE)
# [,1] [,2] [,3] [,4]
#[1,] 1 7 13 19
#[2,] 3 9 15 21
#[3,] 5 11 17 23
A.K.
----- Original Message -
From: Martin Ivanov
To: r-help@r-project.org
Cc:
Sent: Sunday
AM
Subject: Re: [R] avoiding eval parse with indexing
Martin:
Well, assuming I understand, one approach would be to first get the
dim attribute of the array and then create the appropriate call using
that:
> z <- array(1:24,dim=2:4)
> d <- dim(z)
> ix <-lapply(d[-c(1,1)],seq_l
library(abind)
asub(x, 1, 1)
On Sun, May 26, 2013 at 10:43 AM, Bert Gunter wrote:
> Martin:
>
> Well, assuming I understand, one approach would be to first get the
> dim attribute of the array and then create the appropriate call using
> that:
>
>> z <- array(1:24,dim=2:4)
>> d <- dim(z)
>> ix <-
Martin:
Well, assuming I understand, one approach would be to first get the
dim attribute of the array and then create the appropriate call using
that:
> z <- array(1:24,dim=2:4)
> d <- dim(z)
> ix <-lapply(d[-c(1,1)],seq_len)
> do.call("[", c(list(z),1,1,ix))
[1] 1 7 13 19
Is that what you w
On 26-05-2013, at 15:56, Martin Ivanov wrote:
> Hello,
> I would like to get an advice on how the notorious eval(parse()) construct
> could possibly
> be avoided in the following example. I have an array x, which can have
> different number of dimensions,
> but I am only interested in extract
Hello,
I would like to get an advice on how the notorious eval(parse()) construct
could possibly
be avoided in the following example. I have an array x, which can have
different number of dimensions,
but I am only interested in extracting, say, the first element of the first
dimension. Current
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