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Editorial Team
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Asked: 2026-05-17T22:57:02+00:00

I am trying to read a csv file with repeated row names but could

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I am trying to read a csv file with repeated row names but could not. The error message I am getting is Error in read.table(file = file, header = header, sep = sep, quote = quote, : duplicate 'row.names' are not allowed.

The code I am using is:

S1N657 <- read.csv("S1N657.csv",header=T,fill=T,col.names=c("dam","anim","temp"))

An example of my data is given below:

did <- c("1N657","1N657","1N657","1N657","1N657","1N657","1N657","1N657","1N657","1N657")
aid <- c(101,102,103,104,105,106,107,108,109,110)
temp <- c(36,38,37,39,35,37,36,34,39,38)

data <- cbind(did,aid,temp)

Any help will be appreciated.

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1 Answer

  1. Editorial Team

    the function is seeing duplicate row names, so you need to deal with that. Probably the easiest way is with row.names=NULL, which will force row numbering–in other words, it treats your first column as the first dimension and not as the row numbers, and so adds row numbers (consecutive integers starting with “1”.

    read.csv("S1N657.csv", header=T,fill=T, col.names=c("dam","anim","temp"), row.names=NULL)
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