skip some rows in read.csv in R

Question

I have a csv file which I read using the following function:

csvData <- read.csv(file=\"pf.csv\", colClasses=c(NA, NA,\"NULL\",NA,\"NULL\",NA,\"NULL\",\"         


        

Answer 1

It is better to read all and subset later like suggested in the comment :

csvData [!csvData$ticker %in% c('ADCT','ABT'),]

EDIT

You can use fread from data.table package for more efficient method to read your file.

library(read.table)
fread(file="pf.csv")