I'm trying to analyse a large survey created with surveymonkey which has hundreds of columns in the CSV file and the output format is difficult to use as the headers run over two lines.
Thanks!
What I did in the end was print out the headers using libreoffice labeled as V1,V2, etc. then I just read in the file as
m1 <- read.csv('Sheet1.csv', header=FALSE, skip=1)
and then just did the analysis against m1$V10, m1$V23 etc...
To get around the mess of multiple columns I used the following little function
# function to merge columns into one with a space separator and then
# remove multiple spaces
mcols <- function(df, cols) {
# e.g. mcols(df, c(14:18))
exp <- paste('df[,', cols, ']', sep='', collapse=',' )
# this creates something like...
# "df[,14],df[,15],df[,16],df[,17],df[,18]"
# now we just want to do a paste of this expression...
nexp <- paste(" paste(", exp, ", sep=' ')")
# so now nexp looks something like...
# " paste( df[,14],df[,15],df[,16],df[,17],df[,18] , sep='')"
# now we just need to parse this text... and eval() it...
newcol <- eval(parse(text=nexp))
newcol <- gsub(' *', ' ', newcol) # replace duplicate spaces by a single one
newcol <- gsub('^ *', '', newcol) # remove leading spaces
gsub(' *$', '', newcol) # remove trailing spaces
}
# mcols(df, c(14:18))
No doubt somebody will be able to clean this up!
To tidy up Likert-like scales I used:
# function to tidy c('Strongly Agree', 'Agree', 'Disagree', 'Strongly Disagree')
tidylik4 <- function(x) {
xlevels <- c('Strongly Disagree', 'Disagree', 'Agree', 'Strongly Agree')
y <- ifelse(x == '', NA, x)
ordered(y, levels=xlevels)
}
for (i in 44:52) {
m2[,i] <- tidylik4(m2[,i])
}
Feel free to comment as no doubt this will come up again!