Mac Users

Note: Mac users must install openNLP from source before attempting to install qdap.

This may require installing the appropriate version XTools from the Apple Developer site. You may need to register as an Apple developer. An older version of XTools may also be required.

install.packages("openNLP", type = "source")
install.packages("qdap", type = "source")

Windows Users

Note: Windows users may need to install RCurl before installing qdap. Use the following short script:

URL <- ""
install.packages("RCurl", contriburl = URL)

Additionally, if there is a discrepency between the R and Java architectures you will have to download the appropriate version of Java compatable with the version of R you're using.

Development Version

Download the development version of qdap here