Thanks, David, Rui and Jeff!!! The function order works much better.
I should have used an example where the permutation and its inverse are not
identical:
> i <- order(c("B", "C", "A"))
> i
[1] 3 1 2
> c("D","E", "F")[i]
[1] "F" "D" "E"
> c("D","E", "F")[order(i)]
[1] "E" "F" "D"
2018-05-23 14:
Hello,
Like David said, what you are trying to do with sort() can be done with
order() in a much easier way.
First, your code
x <- sort(c("bc","ac","dd"), index.return=TRUE)
Now, with function order()
i <- order(c("bc", "ac", "dd"))
y <- c("D","E", "F")[i]
y
#[1] "E" "D" "F"
# This will
> On May 22, 2018, at 11:37 PM, John wrote:
>
>
> > sort(c("bc","ac","dd"), index.return=TRUE)
> $x
> [1] "ac" "bc" "dd"
>
> $ix
> [1] 2 1 3
>
>
> We have the permutation, namely 1-->2, 2-->1, 3-->3.
> How can I apply the permutation function to a new set
> c("D","E", "F")?
> so that the
Perhaps the question was "what is indexing"?
On May 23, 2018 5:06:39 AM GMT+02:00, David Winsemius
wrote:
>
>
>> On May 22, 2018, at 10:57 PM, John wrote:
>>
>> Thanks, David.
>> I got the answer from the web.
>> Is there any easy way to permute a set (e.g., a set of characters) by
>the perm
> sort(c("bc","ac","dd"), index.return=TRUE)
$x
[1] "ac" "bc" "dd"
$ix
[1] 2 1 3
We have the permutation, namely 1-->2, 2-->1, 3-->3.
How can I apply the permutation function to a new set
c("D","E", "F")?
so that the result is
c("E","D", "F").
2018-05-23 11:06 GMT+08:00 David Winsemius :
>
> On May 22, 2018, at 10:57 PM, John wrote:
>
> Thanks, David.
> I got the answer from the web.
> Is there any easy way to permute a set (e.g., a set of characters) by the
> permutation it returns? Thanks,
>
>
> > x <- c(10,7,4,3,8,2)
> > sort(x, index.return=TRUE)
> $x
> [1] 2 3 4 7
Thanks, David.
I got the answer from the web.
Is there any easy way to permute a set (e.g., a set of characters) by the
permutation it returns? Thanks,
> x <- c(10,7,4,3,8,2)
> sort(x, index.return=TRUE)
$x
[1] 2 3 4 7 8 10
$ix
[1] 6 4 3 2 5 1
2018-05-23 10:49 GMT+08:00 David Winsemius :
> On May 22, 2018, at 10:06 PM, John wrote:
>
> Hi,
>
> Is there any way to find the permutation function of the sorting and to
> apply the function (or its inverse) elsewhere?
>
> For example, the following permutation function from the sorting in the
> matrix form is
> c(1,2,3), c(2,1,3
Hi,
Is there any way to find the permutation function of the sorting and to
apply the function (or its inverse) elsewhere?
For example, the following permutation function from the sorting in the
matrix form is
c(1,2,3), c(2,1,3)
> sort(c("bc","ac","dd"))
[1] "ac" "bc" "dd"
I try to fin
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