I’m pleased to announced that the new haven package is now available on CRAN. Haven makes it easy to read data from SAS, SPSS and Stata. Haven has the same goal as the foreign package, but it:

(Haven also has experimental support for writing SPSS and Stata data. This still has some rough edges but please try it out and report any problems that you find.)

Haven is a binding to the excellent ReadStat C library by Evan Miller. Haven wouldn’t be possible without his hard work - thanks Evan! I’d also like to thank Matt Shotwell who spend a lot of time reverse engineering the SAS binary data format, and Dennis Fisher who tested the SAS code with thousands of SAS files.

Usage

Using haven is easy:

These only need the name of the path. (read_sas() optionally also takes the path to a catolog file.)

Output

All functions return a data frame:

Labelled variables

SAS, Stata and SPSS all have the notion of a “labelled” variable. These are similar to factors, but:

Factors, by contrast, are always integers and every integer value must be associated with a label.

Haven provides a labelled class to model these objects. It doesn’t implement any common methods, but instead focusses of ways to turn a labelled variable into standard R variable:

If you have a use case that’s not covered by these function, please let me know.

Development

Haven is still under very active development. If you have problems loading a dataset, please try the development version, and if that doesn’t work, file an issue.