This is a repository for the project "OOC: Ordered Optimal Classification"

install.packages("devtools", dependencies=TRUE)
library(devtools)

devtools::install_github('tzuliu/ooc')
library(ooc)

• Make sure you have already installed Xcode Developer Tools (through App Store).
• Make sure you have installed xcode command line tools through xcode-select --install on Terminal.
• (For Xcode higher than 10.X and R higher than 4.X) Make sure to create symlink for all the headers file into this folder, /usr/local/include/, through sudo ln -s /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/* /usr/local/include/.
• Make sure you have downloaded gfortran-8.2 from here and installed on your computer.
• Make sure you add /usr/local/gfortran/bin to your PATH through export PATH=$PATH:/usr/local/gfortran/bin.
• Make sure you have installed both pscl and OC in R (due to OC is the dependency and has been archived by R-CRAN).
• Reference: for creating symlink for headers files, for downloading gfortran-8.2 and adding PATH.

• Make sure you have already installed RTools.

For the final version of the paper "What Ordered Optimal Classification Reveals about Ideological Structure Cleavages and Polarization" and the related/replication codes, please refer to this repository.