R - read.csv add rows when loading the dataset - r

Question

I'm trying to read a .csv in R. Some rows of one column have text with a komma, within double quotes: "example, another example"
But R alters the rows (it adds rows) when I try to read it like this:
steekproef <- read.csv('steekproef.csv', header = T, quote = "", sep = ',')
This one doesn't work either when I did a search on the internet:
steekproef <- read.csv('steekproef.csv', header = T, quote = "\"", sep = ',')
This is the error message:
steekproef <- read.csv("steekproef.csv", header = T, sep =",", quote ="\"")
comes with error:
Warning message:
In scan(file, what, nmax, sep, dec, quote, skip, nlines, na.strings, :
EOF within quoted string
Gives data.frame: 1391160 obs. of 29 variables
str(steekproef) gives no error but a
'data.frame': 3103620 obs. of 29 variables:
The dataset has 29 columns and 3019438 rows

Answer 1

I don't think that the problem is caused be the "example, another example":
I created a testfile in Excel and saved it as .csv. It looks like this in Notepad++:
test,num
"example, another example",1
"example, another example",2
example,3
example,4
I could import it without problems using
steekproef<- read.csv('steekproef.csv', header = T, sep = ',')
or steekproef <- read.csv('steekproef.csv', header = T, quote = "\"", sep = ',')
Your first try: steekproef <- read.csv('steekproef.csv', header = T, quote = "", sep = ',') gave me the Error in read.table(file = file, header = header, sep = sep, quote = quote,: duplicate 'row.names' are not allowed