modelMatrix: Create design matrix from data frame

In dhelkey/dgrank: Construct Draper-Gittoes Rankings of Institutions

Description

modelMatrix takes in a data.frame and encodes it as a model.matrix object. Factors use treatment ("one-hot") encoding, creating indicator variables from categorical and binary variables. Note that names of categorical variables will change slightly (n-1 unique values appended to name)

Usage

modelMatrix(x, interactions = FALSE, sparse = TRUE, intercept = FALSE)

Arguments

x	A data.frame with finite, non-missing elements.
interactions	Logical; if TRUE then all interactions included.
sparse	Logical; if TRUE then output a sparse Matrix object.
intercept	Logcal; if TRUE then include a leading column of 1's.

dhelkey/dgrank documentation built on May 12, 2019, 5:24 p.m.