[R] write data from function into external table
Dear list,
My apologies if a solution / explanation to this already exists on the list,
but it is difficult to assign it to a certain keyword.
test-c(1:3)
testfct - function(x) {test[1]-100}
test
[1] 1 2 3
testfct(1)
[1] 1 2 3
Basically, I would like to write data into an external table that the function
does not know. Why is this not working / what alternatives exist?
Thanks, Sebastian
Sebastian Leuzinger
University of Basel, Department of Environmental Science
Institute of Botany
Schönbeinstr. 6 CH-4056 Basel
ph0041 (0) 61 2673511
fax 0041 (0) 61 2673504
email [EMAIL PROTECTED]
web http://pages.unibas.ch/botschoen/leuzinger
__
R-help@stat.math.ethz.ch mailing list
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Re: [R] write data from function into external table
maybe you're looking for something like,
test - 1:3
testfct - function(x){
x[1] - 100
x
}
test
testfct(1)
testfct(test)
I hope it helps.
Best,
Dimitris
Dimitris Rizopoulos
Ph.D. Student
Biostatistical Centre
School of Public Health
Catholic University of Leuven
Address: Kapucijnenvoer 35, Leuven, Belgium
Tel: +32/(0)16/336899
Fax: +32/(0)16/337015
Web: http://med.kuleuven.be/biostat/
http://www.student.kuleuven.be/~m0390867/dimitris.htm
- Original Message -
From: Sebastian Leuzinger [EMAIL PROTECTED]
To: r-help@stat.math.ethz.ch
Sent: Wednesday, June 14, 2006 12:41 PM
Subject: [R] write data from function into external table
Dear list,
My apologies if a solution / explanation to this already exists on the
list,
but it is difficult to assign it to a certain keyword.
test-c(1:3)
testfct - function(x) {test[1]-100}
test
[1] 1 2 3
testfct(1)
[1] 1 2 3
Basically, I would like to write data into an external table that the
function
does not know. Why is this not working / what alternatives exist?
Thanks, Sebastian
Sebastian Leuzinger
University of Basel, Department of Environmental Science
Institute of Botany
Schönbeinstr. 6 CH-4056 Basel
ph0041 (0) 61 2673511
fax 0041 (0) 61 2673504
email [EMAIL PROTECTED]
web http://pages.unibas.ch/botschoen/leuzinger
__
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
Disclaimer: http://www.kuleuven.be/cwis/email_disclaimer.htm
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Re: [R] write data from function into external table
What is your desired output ? This will clarify the problem greatly.
Perhaps, this might be of some use :
f - function(v, pos, val=100){ v[pos] - val; return(v) }
test - 1:3
test - f(test, 1)
test
[1] 100 2 3
Regards, ADai
On Wed, 2006-06-14 at 12:41 +0200, Sebastian Leuzinger wrote:
Dear list,
My apologies if a solution / explanation to this already exists on the list,
but it is difficult to assign it to a certain keyword.
test-c(1:3)
testfct - function(x) {test[1]-100}
test
[1] 1 2 3
testfct(1)
[1] 1 2 3
Basically, I would like to write data into an external table that the
function
does not know. Why is this not working / what alternatives exist?
Thanks, Sebastian
Sebastian Leuzinger
University of Basel, Department of Environmental Science
Institute of Botany
Schönbeinstr. 6 CH-4056 Basel
ph0041 (0) 61 2673511
fax 0041 (0) 61 2673504
email [EMAIL PROTECTED]
web http://pages.unibas.ch/botschoen/leuzinger
__
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] write data from function into external table
Here are two alternatives. See ?-
testfct1 - function() test[1] - 100
# following one can be written more compactly as
# testfct2 - function(test) replace(test, 1, 100)
testfct2 - function(test) { test[1] - 100; test }
# test
test - 1:3; testfct1(); test
test - 1:3; test - testfct2(test); test
On 6/14/06, Sebastian Leuzinger [EMAIL PROTECTED] wrote:
Dear list,
My apologies if a solution / explanation to this already exists on the list,
but it is difficult to assign it to a certain keyword.
test-c(1:3)
testfct - function(x) {test[1]-100}
test
[1] 1 2 3
testfct(1)
[1] 1 2 3
Basically, I would like to write data into an external table that the function
does not know. Why is this not working / what alternatives exist?
Thanks, Sebastian
Sebastian Leuzinger
University of Basel, Department of Environmental Science
Institute of Botany
Schönbeinstr. 6 CH-4056 Basel
ph0041 (0) 61 2673511
fax 0041 (0) 61 2673504
email [EMAIL PROTECTED]
web http://pages.unibas.ch/botschoen/leuzinger
__
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
Re: [R] write data from function into external table
Thanks for the hints, they are useful to me. However, I still do not
understand why my approach fails. In a user defined function, R does not seem
to want to write into an object defined outside this function. (see my first
example below). I guess there is some logic behind this.
On Wednesday 14 June 2006 14:22, you wrote:
Here are two alternatives. See ?-
testfct1 - function() test[1] - 100
# following one can be written more compactly as
# testfct2 - function(test) replace(test, 1, 100)
testfct2 - function(test) { test[1] - 100; test }
# test
test - 1:3; testfct1(); test
test - 1:3; test - testfct2(test); test
On 6/14/06, Sebastian Leuzinger [EMAIL PROTECTED] wrote:
Dear list,
My apologies if a solution / explanation to this already exists on the
list, but it is difficult to assign it to a certain keyword.
test-c(1:3)
testfct - function(x) {test[1]-100}
test
[1] 1 2 3
testfct(1)
[1] 1 2 3
Basically, I would like to write data into an external table that the
function does not know. Why is this not working / what alternatives
exist?
Thanks, Sebastian
Sebastian Leuzinger
University of Basel, Department of Environmental Science
Institute of Botany
Schönbeinstr. 6 CH-4056 Basel
ph0041 (0) 61 2673511
fax 0041 (0) 61 2673504
email [EMAIL PROTECTED]
web http://pages.unibas.ch/botschoen/leuzinger
__
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
--
Sebastian Leuzinger
University of Basel, Department of Environmental Science
Institute of Botany
Schönbeinstr. 6 CH-4056 Basel
ph0041 (0) 61 2673511
fax 0041 (0) 61 2673504
email [EMAIL PROTECTED]
web http://pages.unibas.ch/botschoen/leuzinger
__
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] write data from function into external table
On Wed, 14 Jun 2006, Sebastian Leuzinger wrote:
Thanks for the hints, they are useful to me. However, I still do not
understand why my approach fails. In a user defined function, R does not seem
to want to write into an object defined outside this function. (see my first
example below). I guess there is some logic behind this.
I think the general programming concept you are looking for is scope,
see sec. 10.7 in the R intro:
http://cran.r-project.org/doc/manuals/R-intro.html#Scope
There's more (and more technical) about it in the R Language Definition.
best
Niels
On Wednesday 14 June 2006 14:22, you wrote:
Here are two alternatives. See ?-
testfct1 - function() test[1] - 100
# following one can be written more compactly as
# testfct2 - function(test) replace(test, 1, 100)
testfct2 - function(test) { test[1] - 100; test }
# test
test - 1:3; testfct1(); test
test - 1:3; test - testfct2(test); test
On 6/14/06, Sebastian Leuzinger [EMAIL PROTECTED] wrote:
Dear list,
My apologies if a solution / explanation to this already exists on the
list, but it is difficult to assign it to a certain keyword.
test-c(1:3)
testfct - function(x) {test[1]-100}
test
[1] 1 2 3
testfct(1)
[1] 1 2 3
Basically, I would like to write data into an external table that the
function does not know. Why is this not working / what alternatives
exist?
Thanks, Sebastian
Sebastian Leuzinger
University of Basel, Department of Environmental Science
Institute of Botany
Schönbeinstr. 6 CH-4056 Basel
ph0041 (0) 61 2673511
fax 0041 (0) 61 2673504
email [EMAIL PROTECTED]
web http://pages.unibas.ch/botschoen/leuzinger
__
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
--
Sebastian Leuzinger
University of Basel, Department of Environmental Science
Institute of Botany
Schönbeinstr. 6 CH-4056 Basel
ph0041 (0) 61 2673511
fax 0041 (0) 61 2673504
email [EMAIL PROTECTED]
web http://pages.unibas.ch/botschoen/leuzinger
__
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] write data from function into external table
If functions don't modify their environment then its generally
easier to debug programs so it encourarges better programming.
On 6/14/06, Sebastian Leuzinger [EMAIL PROTECTED] wrote:
Thanks for the hints, they are useful to me. However, I still do not
understand why my approach fails. In a user defined function, R does not seem
to want to write into an object defined outside this function. (see my first
example below). I guess there is some logic behind this.
On Wednesday 14 June 2006 14:22, you wrote:
Here are two alternatives. See ?-
testfct1 - function() test[1] - 100
# following one can be written more compactly as
# testfct2 - function(test) replace(test, 1, 100)
testfct2 - function(test) { test[1] - 100; test }
# test
test - 1:3; testfct1(); test
test - 1:3; test - testfct2(test); test
On 6/14/06, Sebastian Leuzinger [EMAIL PROTECTED] wrote:
Dear list,
My apologies if a solution / explanation to this already exists on the
list, but it is difficult to assign it to a certain keyword.
test-c(1:3)
testfct - function(x) {test[1]-100}
test
[1] 1 2 3
testfct(1)
[1] 1 2 3
Basically, I would like to write data into an external table that the
function does not know. Why is this not working / what alternatives
exist?
Thanks, Sebastian
Sebastian Leuzinger
University of Basel, Department of Environmental Science
Institute of Botany
Schönbeinstr. 6 CH-4056 Basel
ph0041 (0) 61 2673511
fax 0041 (0) 61 2673504
email [EMAIL PROTECTED]
web http://pages.unibas.ch/botschoen/leuzinger
__
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
--
Sebastian Leuzinger
University of Basel, Department of Environmental Science
Institute of Botany
Schönbeinstr. 6 CH-4056 Basel
ph0041 (0) 61 2673511
fax 0041 (0) 61 2673504
email [EMAIL PROTECTED]
web http://pages.unibas.ch/botschoen/leuzinger
__
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
