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Utility function to add row names to a data frame #639

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Mullefa opened this issue Sep 27, 2014 · 0 comments
Closed

Utility function to add row names to a data frame #639

Mullefa opened this issue Sep 27, 2014 · 0 comments
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@Mullefa
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@Mullefa Mullefa commented Sep 27, 2014

Oftentimes, when I am working with a data frame returned from another package, important information will be encoded using the row names of the data frame. Using dplyr, this data should be added as a column (as it is dropped by the manipulation verbs). Something like the following would be useful:

# nse
add_rownames <- function(.data, col_name = "rownames") {
  col_name <- deparse(substitute(col_name))
  add_row_names_(.data, col_name)
}

# se
add_rownames_ <- function(.data, col_name = "rownames") {
  row_names <- data_frame(rownames(.data))
  names(row_names) <- col_name
  dplyr:::cbind_list(row_names, .data)
}

Maybe make the SE version generic?

@hadley hadley added the feature label Sep 30, 2014
@hadley hadley added this to the 0.3.1 milestone Sep 30, 2014
@hadley hadley self-assigned this Sep 30, 2014
@hadley hadley closed this in be7e622 Nov 20, 2014
krlmlr pushed a commit to krlmlr/dplyr that referenced this issue Mar 2, 2016
@lock lock bot locked as resolved and limited conversation to collaborators Jun 9, 2018
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