Extract the availabilites matrix from the dataset using a column name prefix
extract_av_cols(data, prefix)
data
: The dataset used in the modelprefix
: The prefix of the availability columns, i.e. avail_Matrix of availabilities for alternatives and the number of choice observations
data("Train", package="mlogit") Train$ID <- Train$id Train$CHOICE <- as.numeric(Train$choice) Train$avail_A <- sample(2, replace=TRUE, size=nrow(Train))-1 Train$avail_B <- sample(2, replace=TRUE, size=nrow(Train))-1 extract_av_cols(Train, 'avail_')
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