zTreeSbj function

Read '.sbj' files generated by 'z-Tree' into R

Read '.sbj' files which are written by the Microsoft Windows program 'z-Tree'. The latter is a software for developing and carrying out economic experiments (see http://www.ztree.uzh.ch/ for more information).

zTreeSbj(files, sep = "\t", zTree.silent=getOption("zTree.silent"),
        zTree.encoding=getOption("zTree.encoding"),ignore.errors=FALSE)

Arguments

• files: A vector of 'z-Tree' .sbj filenames
• sep: 'z-Tree' uses "\t" as a separator. If you have a manipulated file, you might need to change the separator.
• zTree.silent: If TRUE, generates less verbose output.
• zTree.encoding: zTree writes text files and seems to use latin1 (windows-1252) encoding for these files.
• ignore.errors: Usually, zTreeSbj stops with an error when it detects a wrong encoding. With ignore.errors=TRUE it only generates a warning.

Returns

A data frame with one entry for each subject.

References

Urs Fischbacher. "z-Tree: Zurich Toolbox for Ready-made Economic Experiments." Experimental Economics (2) 171-178, 2007.

Author(s)

Oliver Kirchkamp

See Also

See also zTreeTables

Examples

## Not run:

files <- list.files(pattern = "*.sbj$",recursive=TRUE)
fname <- sub(".*/","",files)
sbj <- zTreeSbj(aggregate(files,list(fname),function(x) x[1])$x)
## End(Not run)