I also suggest you Hadley's optimized package for interoperating xls files with R:
https://github.com/tidyverse/readxl https://cran.r-project.org/web/packages/readxl/index.html ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
