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?
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> > ______________________________________________ > R-help at 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 >
for (k in list.files()){
...
}
best
S??ren
________________________________
Fra: r-help-bounces at stat.math.ethz.ch p?? vegne af Atte Tenkanen
Sendt: ma 20-02-2006 22:40
Til: r-help at 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 at 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