To provide some mild support for round-tripping variables between Stata/SPSS and R, haven stores variable formats in an attribute: format.stata, format.spss, or format.sas. If this causes problems for your code, you can get rid of them with zap_formats.

zap_formats(x)

Arguments

x

A vector or data frame.

See also

Other zappers: zap_empty, zap_labels, zap_widths