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| as_factor | Convert input to a factor. |
| as_factor.character | Convert input to a factor. |
| as_factor.data.frame | Convert input to a factor. |
| as_factor.factor | Convert input to a factor. |
| as_factor.labelled | Convert input to a factor. |
| format_tagged_na | "Tagged" missing values |
| is.labelled | Create a labelled vector. |
| is_tagged_na | "Tagged" missing values |
| labelled | Create a labelled vector. |
| labelled_spss | Labelled vectors for SPSS |
| na_tag | "Tagged" missing values |
| print_labels | Print the labels of a labelled vector |
| print_tagged_na | "Tagged" missing values |
| read_dta | Read and write Stata DTA files. |
| read_por | Read SPSS (SAV & POR) files. Write SAV files. |
| read_sas | Read and write SAS files. |
| read_sav | Read SPSS (SAV & POR) files. Write SAV files. |
| read_spss | Read SPSS (SAV & POR) files. Write SAV files. |
| read_stata | Read and write Stata DTA files. |
| tagged_na | "Tagged" missing values |
| write_dta | Read and write Stata DTA files. |
| write_sas | Read and write SAS files. |
| write_sav | Read SPSS (SAV & POR) files. Write SAV files. |
| zap_empty | Convert empty strings into missing values. |
| zap_formats | Remove format attributes |
| zap_labels | Zap labels |
| zap_missing | Zap special missings to regular R missings |