There is a example for categorical data visualization from the following link:
packages "extracat" was required, author described the installation as:
"3 . In the terminal type the following command to install the extracat package: ` R CMD INSTALL -1 C:/Users/User/Desktop/Fluctuation extracat_1.7-6.tar "
But following the instruction, kept receiving error message, is there other way to install this package? Thank you!