Re: [R] How to read more than 1 table?

2006-02-20 Thread Kjetil Brinchmann Halvorsen 
Atte Tenkanen wrote:
 Question 1) I want to read many csv-tables and run the same commands for
 all of them. Is there some simpler solution than this below to solve this
 problem?
 
 
 for (g in 1:6)
 {
 
 if (g==1){k=kt1_0057}
 if (g==2){k=kt1_0101}
 if (g==3){k=kt1_0613}
 if (g==4){k=staten}
 if (g==5){k=tenpenny}
 if (g==6){k=fiddrunk}
 
 TABLE=read.table(paste(/home/user/,k,.csv,sep=),sep = ,,
 na.strings=.,header=F,fill=TRUE);

put your filenames in a character vector filenames:
filenames - paste( c(kt1_0057, ...), .csv, sep=)
tables  - lapply( filenames, function(x) read.table(file=x, na.strings= 
..., ...) )

and if you want to repeat the same task for your six tables do it with 
lapply()  or  sapply()

 
 print(TABLE)
 
 }
 
 Question 2) Is it possible to create new variables for example with the
 assistance of for-loop without initialising them beforehand?

This way:
sapply(1:10, function(i) your.task(i) )

sapply() will do the initialization for you!

Kjetil

 
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Re: [R] How to read more than 1 table?

2006-02-20 Thread Søren Højsgaard 
for (k in list.files()){
...
}
best
Søren



Fra: [EMAIL PROTECTED] på vegne af Atte Tenkanen
Sendt: ma 20-02-2006 22:40
Til: r-help@stat.math.ethz.ch
Emne: [R] How to read more than 1 table?



Question 1) I want to read many csv-tables and run the same commands for
all of them. Is there some simpler solution than this below to solve this
problem?


for (g in 1:6)
{

if (g==1){k=kt1_0057}
if (g==2){k=kt1_0101}
if (g==3){k=kt1_0613}
if (g==4){k=staten}
if (g==5){k=tenpenny}
if (g==6){k=fiddrunk}

TABLE=read.table(paste(/home/user/,k,.csv,sep=),sep = ,,
na.strings=.,header=F,fill=TRUE);

print(TABLE)

}

Question 2) Is it possible to create new variables for example with the
assistance of for-loop without initialising them beforehand?

__
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