Re: [R] Macro variable substitution

2009-09-30 Thread Greg Snow 
There was a rather in depth article on doing macros in R in the R newsletter a 
couple of years ago.  There is also the defmacro function in the gtools package 
based on that article that can make the job easier for many cases.

See fortune(236) before taking the assign route.

-- 
Gregory (Greg) L. Snow Ph.D.
Statistical Data Center
Intermountain Healthcare
greg.s...@imail.org
801.408.8111


 -Original Message-
 From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-
 project.org] On Behalf Of David Young
 Sent: Tuesday, September 29, 2009 9:58 AM
 To: r-help@r-project.org
 Subject: [R] Macro variable substitution
 
 Hello All,
 
 I'm a new R user and have a question about what in SAS would be called
 macro variable substitution.  Below is some R code that doesn't work,
 but I think it will illustrate what I'd like to do.
 
 readfunc-function(x) {
   x - read.table(paste(x,.csv,sep=), header=TRUE,sep=,)
 }
 readfunc(TEF)
 
 What I'd like to do is have the letters TEF become the name of the
 new
 R data and also be used in conjunction with .csv to read the file
 TEF.csv.
 
 So working R code looks like this:
 
 TEF - read.table(TEF.csv, header=TRUE,sep=,)
 
 but I'd like to type the changing letter sequence just once.
 
 Any suggestions would be appreciated.
 
 --
 Best regards,
 
 David Young
 Marketing and Statistical Consultant
 Madrid, Spain
 +34 913 540 381
 http://www.linkedin.com/in/europedavidyoung
 
 __
 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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and provide commented, minimal, self-contained, reproducible code.

Re: [R] Macro variable substitution

2009-09-29 Thread baptiste auguie 
Hi,

I guess you want ?assign

See also this page for a working example,

http://wiki.r-project.org/rwiki/doku.php?id=guides:assigning-variable-names

HTH,

baptiste

2009/9/29 David Young dyo...@telefonica.net:
 Hello All,

 I'm a new R user and have a question about what in SAS would be called
 macro variable substitution.  Below is some R code that doesn't work,
 but I think it will illustrate what I'd like to do.

 readfunc-function(x) {
  x - read.table(paste(x,.csv,sep=), header=TRUE,sep=,)
 }
 readfunc(TEF)

 What I'd like to do is have the letters TEF become the name of the new
 R data and also be used in conjunction with .csv to read the file
 TEF.csv.

 So working R code looks like this:

 TEF - read.table(TEF.csv, header=TRUE,sep=,)

 but I'd like to type the changing letter sequence just once.

 Any suggestions would be appreciated.

 --
 Best regards,

 David Young
 Marketing and Statistical Consultant
 Madrid, Spain
 +34 913 540 381
 http://www.linkedin.com/in/europedavidyoung

 __
 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.

Re: [R] Macro variable substitution

2009-09-29 Thread Erik Iverson 
One option, see ?assign and write a wrapper around it, using the pos 
argument.  

 -Original Message-
 From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org]
 On Behalf Of David Young
 Sent: Tuesday, September 29, 2009 10:58 AM
 To: r-help@r-project.org
 Subject: [R] Macro variable substitution
 
 Hello All,
 
 I'm a new R user and have a question about what in SAS would be called
 macro variable substitution.  Below is some R code that doesn't work,
 but I think it will illustrate what I'd like to do.
 
 readfunc-function(x) {
   x - read.table(paste(x,.csv,sep=), header=TRUE,sep=,)
 }
 readfunc(TEF)
 
 What I'd like to do is have the letters TEF become the name of the new
 R data and also be used in conjunction with .csv to read the file
 TEF.csv.
 
 So working R code looks like this:
 
 TEF - read.table(TEF.csv, header=TRUE,sep=,)
 
 but I'd like to type the changing letter sequence just once.
 
 Any suggestions would be appreciated.
 
 --
 Best regards,
 
 David Young
 Marketing and Statistical Consultant
 Madrid, Spain
 +34 913 540 381
 http://www.linkedin.com/in/europedavidyoung
 
 __
 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.