HI,
You could try:
#If all the files are in the working directory:
vec1<-list.files() #Created 3 dummy files in my WD
vec1
#[1] "mergedStatstA.csv" "mergedStatstB.csv" "mergedStatstC.csv"
library(gdata)
lapply(seq_along(vec1),function(i)
{x1<-read.csv(vec1[i],header=TRUE,sep="\t");x2<-rename.vars(x1,from="X",to="Statistics.Calculated",info=FALSE);write.csv(x2,paste0("Modified_",vec1[i]),row.names=FALSE)})
###If you want #to save it as a different file name.
list.files()
#[1] "mergedStatstA.csv" "mergedStatstB.csv"
#[3] "mergedStatstC.csv" "Modified_mergedStatstA.csv"
#[5] "Modified_mergedStatstB.csv" "Modified_mergedStatstC.csv"
vec2<- list.files()[grep("Modified",list.files())]
sapply(seq_along(vec2),function(i){x1<-read.csv(vec2[i],header=TRUE);
colnames(x1)})
# [,1] [,2] [,3]
#[1,] "Statistics.Calculated" "Statistics.Calculated" "Statistics.Calculated"
#[2,] "col2" "col3" "col4"
A.K.
----- Original Message -----
From: bcrombie <bcrom...@utk.edu>
To: r-help@r-project.org
Cc:
Sent: Wednesday, August 14, 2013 3:43 PM
Subject: [R] condense repetitive code for read.csv and rename.vars
Is there a more concise way to write the following code?
library(gdata)
mydataOUTPUTrtfA <- read.csv("mergedStatstA.csv")
save(mydataOUTPUTrtfA, file="mydataOUTPUTrtfA.RData")
mydataOUTPUTrtfA <- rename.vars(mydataOUTPUTrtfA, from="X",
to="Statistics.Calculated", info=FALSE)
mydataOUTPUTrtfB <- read.csv("mergedStatstB.csv")
save(mydataOUTPUTrtfB, file="mydataOUTPUTrtfB.RData")
mydataOUTPUTrtfB <- rename.vars(mydataOUTPUTrtfB, from="X",
to="Statistics.Calculated", info=FALSE)
mydataOUTPUTrtfC <- read.csv("mergedStatstC.csv")
save(mydataOUTPUTrtfC, file="mydataOUTPUTrtfC.RData")
mydataOUTPUTrtfC <- rename.vars(mydataOUTPUTrtfC, from="X",
to="Statistics.Calculated", info=FALSE)
I will have a series of mydataOUTPUTrtf files spanning a large portion of
the alphabet, so to speak:
e.g. mydataOUTPUTrtfA to mydataOUTPUTrtfG --- thanks for your help
--
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
