Re: [R] Expanding a VCV Matrix
Oh.you are right.sorry. So many work nowadays, even
cant see things properly.
Anyways thanks for your input.
2011/4/21 Uwe Ligges :
>
>
> On 21.04.2011 17:08, Maithula Chandrashekhar wrote:
>>
>> Thanks Uwe for your insight. However this could not solve my problem.
>> Actually, I meant to define 'Str' in this way:
>>
>>> mat<- matrix(c(1,2,0,2,5,0.5,0,0.5,3), 3, 3)
>>> colnames(mat)<- rownames(mat)<- paste("variable", 1:3, sep="")
>>> mat
>>
>> variable1 variable2 variable3
>> variable1 1 2.0 0.0
>> variable2 2 5.0 0.5
>> variable3 0 0.5 3.0
>>>
>>> Str<- c(paste("variable", 1:4, sep=""), "variable2"); Str
>>
>> [1] "variable1" "variable2" "variable3" "variable4" "variable2"
>>
>> Therefore 'variable2' should appear twice in my modified VCV matrix,
>> which was not there in your suggestion. Is there any better any on how
>> can I do that? or it is really imposable to achieve?
>
> It is there twice if the strings and the rownames match.
>
> Uwe
>
>
>>
>> Thanks,
>>
>> 2011/4/21 Uwe Ligges:
>>>
>>>
>>> On 20.04.2011 19:26, Maithula Chandrashekhar wrote:
>>>>
>>>> Dear all, I have special task to expand a given VCV matrix, however
>>>> could not accomplice yet. Let say I have following VCV matrix
>>>>
>>>>> mat<- matrix(c(1,2,0,2,5,0.5,0,0.5,3), 3, 3)
>>>>> colnames(mat)<- rownames(mat)<- paste("variable", 1:3)
>>>>> mat
>>>>
>>>> variable 1 variable 2 variable 3
>>>> variable 1 1 2.0 0.0
>>>> variable 2 2 5.0 0.5
>>>> variable 3 0 0.5 3.0
>>>>
>>>> Now, say I have a general string vector like this:
>>>>
>>>>> Str<- c(paste("variable", 1:4), "variable2")
>>>>> Str
>>>>
>>>> [1] "variable 1" "variable 2" "variable 3" "variable 4" "variable 2"
>>>
>>>
>>>
>>> If Str is like the printed one above rather than the code example, you
>>> can
>>> do:
>>>
>>> mat[Str[Str %in% rownames(mat)], Str[Str %in% colnames(mat)]]
>>>
>>> Uwe Ligges
>>>
>>>
>>>
>>>
>>>> Now according to this string, I want my previous VCV matrix also
>>>> expands. Therefore, as "variable 4" is not there in VCV matrix, so it
>>>> will be ignored. Therefore final VCV matrix will be of order 4, and
>>>> will look like:
>>>>
>>>> variable 1 variable 2 variable 3 variable 2
>>>> variable 1 1 2 0 2
>>>> variable 2 2 5 0.5 5
>>>> variable 3 0 0.5 3 0.5
>>>> variable 2 2 5 0.5 5
>>>>
>>>> However, I do not think it is just some straightforward expansion,
>>>> which could be done just by the subsetting mechanism of R. Is there
>>>> any idea on how can I do it for general case?
>>>>
>>>> Thanks for your time,
>>>>
>>>> __
>>>> R-help@r-project.org mailing list
>>>> https://stat.ethz.ch/mailman/listinfo/r-help
>>>> PLEASE do read the posting guide
>>>> http://www.R-project.org/posting-guide.html
>>>> and provide commented, minimal, self-contained, reproducible code.
>>>
>
__
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https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
Re: [R] Expanding a VCV Matrix
Thanks Uwe for your insight. However this could not solve my problem.
Actually, I meant to define 'Str' in this way:
> mat <- matrix(c(1,2,0,2,5,0.5,0,0.5,3), 3, 3)
> colnames(mat) <- rownames(mat) <- paste("variable", 1:3, sep="")
> mat
variable1 variable2 variable3
variable1 1 2.0 0.0
variable2 2 5.0 0.5
variable3 0 0.5 3.0
>
> Str<- c(paste("variable", 1:4, sep=""), "variable2"); Str
[1] "variable1" "variable2" "variable3" "variable4" "variable2"
Therefore 'variable2' should appear twice in my modified VCV matrix,
which was not there in your suggestion. Is there any better any on how
can I do that? or it is really imposable to achieve?
Thanks,
2011/4/21 Uwe Ligges :
>
>
> On 20.04.2011 19:26, Maithula Chandrashekhar wrote:
>>
>> Dear all, I have special task to expand a given VCV matrix, however
>> could not accomplice yet. Let say I have following VCV matrix
>>
>>> mat<- matrix(c(1,2,0,2,5,0.5,0,0.5,3), 3, 3)
>>> colnames(mat)<- rownames(mat)<- paste("variable", 1:3)
>>> mat
>>
>> variable 1 variable 2 variable 3
>> variable 1 1 2.0 0.0
>> variable 2 2 5.0 0.5
>> variable 3 0 0.5 3.0
>>
>> Now, say I have a general string vector like this:
>>
>>> Str<- c(paste("variable", 1:4), "variable2")
>>> Str
>>
>> [1] "variable 1" "variable 2" "variable 3" "variable 4" "variable 2"
>
>
>
> If Str is like the printed one above rather than the code example, you can
> do:
>
> mat[Str[Str %in% rownames(mat)], Str[Str %in% colnames(mat)]]
>
> Uwe Ligges
>
>
>
>
>> Now according to this string, I want my previous VCV matrix also
>> expands. Therefore, as "variable 4" is not there in VCV matrix, so it
>> will be ignored. Therefore final VCV matrix will be of order 4, and
>> will look like:
>>
>> variable 1 variable 2 variable 3 variable 2
>> variable 1 1 2 0 2
>> variable 2 2 5 0.5 5
>> variable 3 0 0.5 3 0.5
>> variable 2 2 5 0.5 5
>>
>> However, I do not think it is just some straightforward expansion,
>> which could be done just by the subsetting mechanism of R. Is there
>> any idea on how can I do it for general case?
>>
>> Thanks for your time,
>>
>> __
>> R-help@r-project.org mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-help
>> PLEASE do read the posting guide
>> http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>
__
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
[R] Expanding a VCV Matrix
Dear all, I have special task to expand a given VCV matrix, however
could not accomplice yet. Let say I have following VCV matrix
> mat <- matrix(c(1,2,0,2,5,0.5,0,0.5,3), 3, 3)
> colnames(mat) <- rownames(mat) <- paste("variable", 1:3)
> mat
variable 1 variable 2 variable 3
variable 1 12.00.0
variable 2 25.00.5
variable 3 00.53.0
Now, say I have a general string vector like this:
> Str <- c(paste("variable", 1:4), "variable2")
> Str
[1] "variable 1" "variable 2" "variable 3" "variable 4" "variable 2"
Now according to this string, I want my previous VCV matrix also
expands. Therefore, as "variable 4" is not there in VCV matrix, so it
will be ignored. Therefore final VCV matrix will be of order 4, and
will look like:
variable 1 variable 2 variable 3 variable 2
variable 1 1 2 0 2
variable 2 2 5 0.5 5
variable 3 0 0.5 3 0.5
variable 2 2 5 0.5 5
However, I do not think it is just some straightforward expansion,
which could be done just by the subsetting mechanism of R. Is there
any idea on how can I do it for general case?
Thanks for your time,
__
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
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__
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
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