Re: [R] dynamic object names?
John Charles Considine wrote: > On Mon, 2005-09-19 at 11:38 +0200, Uwe Ligges wrote: > >>[EMAIL PROTECTED] wrote: >> >> >>>I am trying to extract data from a matrix. Let's say that i am interested in >>>extracting >>>rows from a 4x4 matrix. Instead of giving a fix name to these 4 rows I would >>>like to add a number to prefix. As result I should get 4 objects named: >>> >>>prefix_1 >>>prefix_2 >>>prefix_3 >>>prefix_4 > > Samir, > In addition to the other comments, part of the problem may be that you > can't assign the character '_' to standard objects. Could you use '.' > instead? Actually underscores have been allowed in names since version 1.9.0. Duncan Murdoch __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] dynamic object names?
John Charles Considine wrote:
> On Mon, 2005-09-19 at 11:38 +0200, Uwe Ligges wrote:
>
>>[EMAIL PROTECTED] wrote:
>>
>>
>>>I am trying to extract data from a matrix. Let's say that i am interested in
>>>extracting
>>>rows from a 4x4 matrix. Instead of giving a fix name to these 4 rows I would
>>>like to add a number to prefix. As result I should get 4 objects named:
>>>
>>>prefix_1
>>>prefix_2
>>>prefix_3
>>>prefix_4
>
> Samir,
> In addition to the other comments, part of the problem may be that you
> can't assign the character '_' to standard objects.
Why not???
R can handle standard names with "_" in it for ages now.
Uwe Ligges
> Could you use '.' instead?
> JC
>
>
>>>I attepted to solve the problem with a loop, but without success. Any hints??
>>
>>
>>1. In fact, you do not really want it.
>>2. You want to use "<-" rather than "->" for assigments. Reading your
>>code is really hard when you are using this non-conventional way.
>>3. In order to answer your question: This is the FAQ "How can I turn a
>>string into a variable?". The posting guide asks you to read these FAQs
>>before sending questions to R-help. Please do so.
>>
>>Uwe Ligges
>>
>>
>>
>>
>>
matrix(LETTERS[1:16], ncol=4) -> MM
MM
>>>
>>> [,1] [,2] [,3] [,4]
>>>[1,] "A" "E" "I" "M"
>>>[2,] "B" "F" "J" "N"
>>>[3,] "C" "G" "K" "O"
>>>[4,] "D" "H" "L" "P"
>>>
>>>
>>>for (xxx in 1:4) {
>>>MM[xxx,] -> prefix_xxx;
>>>}
>>>
>>>
>>>Thanks
>>>
>>>samir
>>>
>>>__
>>>R-help@stat.math.ethz.ch mailing list
>>>https://stat.ethz.ch/mailman/listinfo/r-help
>>>PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
>>
>>__
>>R-help@stat.math.ethz.ch mailing list
>>https://stat.ethz.ch/mailman/listinfo/r-help
>>PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
>
>
> __
> R-help@stat.math.ethz.ch mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
__
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Re: [R] dynamic object names?
see ?paste hih __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] dynamic object names?
On Mon, 2005-09-19 at 11:38 +0200, Uwe Ligges wrote:
> [EMAIL PROTECTED] wrote:
>
> > I am trying to extract data from a matrix. Let's say that i am interested in
> > extracting
> > rows from a 4x4 matrix. Instead of giving a fix name to these 4 rows I would
> > like to add a number to prefix. As result I should get 4 objects named:
> >
> > prefix_1
> > prefix_2
> > prefix_3
> > prefix_4
Samir,
In addition to the other comments, part of the problem may be that you
can't assign the character '_' to standard objects. Could you use '.'
instead?
JC
> >
> > I attepted to solve the problem with a loop, but without success. Any
> > hints??
>
>
> 1. In fact, you do not really want it.
> 2. You want to use "<-" rather than "->" for assigments. Reading your
> code is really hard when you are using this non-conventional way.
> 3. In order to answer your question: This is the FAQ "How can I turn a
> string into a variable?". The posting guide asks you to read these FAQs
> before sending questions to R-help. Please do so.
>
> Uwe Ligges
>
>
>
>
> >
> >>matrix(LETTERS[1:16], ncol=4) -> MM
> >>MM
> >
> > [,1] [,2] [,3] [,4]
> > [1,] "A" "E" "I" "M"
> > [2,] "B" "F" "J" "N"
> > [3,] "C" "G" "K" "O"
> > [4,] "D" "H" "L" "P"
> >
> >
> > for (xxx in 1:4) {
> > MM[xxx,] -> prefix_xxx;
> > }
> >
> >
> > Thanks
> >
> > samir
> >
> > __
> > R-help@stat.math.ethz.ch mailing list
> > https://stat.ethz.ch/mailman/listinfo/r-help
> > PLEASE do read the posting guide!
> > http://www.R-project.org/posting-guide.html
>
> __
> R-help@stat.math.ethz.ch mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
__
R-help@stat.math.ethz.ch mailing list
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PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] dynamic object names?
[EMAIL PROTECTED] wrote:
> I am trying to extract data from a matrix. Let's say that i am interested in
> extracting
> rows from a 4x4 matrix. Instead of giving a fix name to these 4 rows I would
> like to add a number to prefix. As result I should get 4 objects named:
>
> prefix_1
> prefix_2
> prefix_3
> prefix_4
>
> I attepted to solve the problem with a loop, but without success. Any hints??
1. In fact, you do not really want it.
2. You want to use "<-" rather than "->" for assigments. Reading your
code is really hard when you are using this non-conventional way.
3. In order to answer your question: This is the FAQ "How can I turn a
string into a variable?". The posting guide asks you to read these FAQs
before sending questions to R-help. Please do so.
Uwe Ligges
>
>>matrix(LETTERS[1:16], ncol=4) -> MM
>>MM
>
> [,1] [,2] [,3] [,4]
> [1,] "A" "E" "I" "M"
> [2,] "B" "F" "J" "N"
> [3,] "C" "G" "K" "O"
> [4,] "D" "H" "L" "P"
>
>
> for (xxx in 1:4) {
> MM[xxx,] -> prefix_xxx;
> }
>
>
> Thanks
>
> samir
>
> __
> R-help@stat.math.ethz.ch mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
__
R-help@stat.math.ethz.ch mailing list
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PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
[R] dynamic object names?
I am trying to extract data from a matrix. Let's say that i am interested in
extracting
rows from a 4x4 matrix. Instead of giving a fix name to these 4 rows I would
like to add a number to prefix. As result I should get 4 objects named:
prefix_1
prefix_2
prefix_3
prefix_4
I attepted to solve the problem with a loop, but without success. Any hints??
> matrix(LETTERS[1:16], ncol=4) -> MM
> MM
[,1] [,2] [,3] [,4]
[1,] "A" "E" "I" "M"
[2,] "B" "F" "J" "N"
[3,] "C" "G" "K" "O"
[4,] "D" "H" "L" "P"
for (xxx in 1:4) {
MM[xxx,] -> prefix_xxx;
}
Thanks
samir
__
R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
