burt | R Documentation |
matlogic returns for all variables a matrix of logical values for each levels. burt is defined as t(matlogic).matlogic
burt(x) matlogic(x)
x |
A dataframe that contents only factors |
Antoine Lucas
color <- as.factor(c('blue','red','red','blue','red')) size <- as.factor(c('large','large','small','medium','large')) x <- data.frame(color,size) matlogic(x) ## color.blue color.red size.large size.medium size.small ##1 1 0 1 0 0 ##2 0 1 1 0 0 ##3 0 1 0 0 1 ##4 1 0 0 1 0 ##5 0 1 1 0 0 burt(x) ## color.blue color.red size.large size.medium size.small ## color.blue 2 0 1 1 0 ## color.red 0 3 2 0 1 ## size.large 1 2 3 0 0 ## size.medium 1 0 0 1 0 ## size.small 0 1 0 0 1
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