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I am very new in R programming. I would be highly obliged if anyone help me to solve this problem. In a folder more than 10000 CSV files are there. Every file column names can be different. I want to create a single Data frame/ master Data which will be helpful for my further analysis.

Rajesh Ghosal
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  • So you want to read in every .csv file in a given folder and then bind them together into a single data.frame? – divibisan Apr 04 '18 at 18:04
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    Take a look at my answer at [How to make a list of data frames](https://stackoverflow.com/questions/17499013/how-do-i-make-a-list-of-data-frames/24376207#24376207). It covers reading in all files from a directory and optionally combining them. (I suggest it as a dupe.) – Gregor Thomas Apr 04 '18 at 18:05

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Suppose 3 data frames with different name. #Create a vector with the csv names. 

names_csv=c("a", "b", "c")
#with lapply make the same instruction for the input range 
# (1:length(names_csv)) and save the result in a list.

list_dataframes= lapply(1:length(names_csv), function(i){
                            csv=read.csv(file=paste0(names_csv[i],".csv"))
                 })
#then with setNames rename each element of a list with name of csv 

setNames(list_dataframes, names_csv)

I hope that this would hepl you.

nriquec
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