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My input file does not have column names. I want to put column names (header) after reading the file as a DataFrame. How can I add a header to an R DataFrame?

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You can use the names() function to set the header of a DataFrame.

Here is an example:

names(your_dataframe) <- c("col1", "col2", "col3")

The above example adds a header to the DataFrame with 3 columns: "col1", "col2", "col3".

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