parse_nhgis_codebook: Parse an NHGIS codebook
In lmullen/mullenMisc: Miscellaneous Functions

Description Usage Arguments Value Examples

NHGIS provides historical census data with fields named, for example AA001. For each csv file it provides a plain text codebook which explains the meanings of these codes. This function parses those codebooks and returns a data frame which can be merged back into the dataset to get the meanings of the codes.

1	parse_nhgis_codebook(filename)

filename

The path to an NHGIS codebook.

A data frame with two columns code and meaning.

sample_codebook <- system.file("extdata",
                               "nhgis0024_ds17_1870_county_codebook.txt",
                               package = "mullenMisc")
parse_nhgis_codebook(sample_codebook)