Expand Matrix
This utility function expands a matrix or data frame to an indicator supermatrix and optionally converts this to a data frame again. By default NA becomes zero and constant rows and columns are eliminated.
expandFrame(tab, clean = TRUE, zero = TRUE, returnFrame = TRUE)
tab: Data frame (factors). Missings are coded as NA.clean: If TRUE, rows and colums with 0 margins in data frame are deleted.zero: If TRUE, NA's are replaced by 0.returnFrame: If TRUE, a data frame is returned; if FALSE a matrix.burtTable, mkIndiList
## sleeping bags data(sleeping) sleeping_cat <- sleeping temp_cat <- cut(sleeping$Temperature, c(-20, -1, 7), labels = c("warm", "cold")) sleeping_cat$Temperature <- temp_cat weight_cat <- cut(sleeping$Weight, c(700, 1100, 2200), labels = c("light", "heavy")) sleeping_cat$Weight <- weight_cat price_cat <- cut(sleeping$Price, c(100, 250, 350, 700), labels = c("cheap", "medium", "expensive")) sleeping_cat$Price <- price_cat sleeping_cat expandFrame(sleeping_cat)