Add all combinations
Add all combinations of the given rows and columns to the data frames.
add.all.combinations(data, vars = list(NULL), fill=NA)
data |
data.frame |
vars |
variables (list of character vectors) |
fill |
value to fill structural missings with |
This function is used to ensure that we have a matrix of the appropriate dimensionaliy with no missing cells.
Hadley Wickham <h.wickham@gmail.com>
rdunif <-
function(n=20, min=0, max=10) floor(runif(n,min, max))
df <- data.frame(a = rdunif(), b = rdunif(),c = rdunif(), result=1:20)
add.all.combinations(df)
add.all.combinations(df, list("a", "b"))
add.all.combinations(df, list("a", "b"), fill=0)
add.all.combinations(df, list(c("a", "b")))
add.all.combinations(df, list("a", "b", "c"))
add.all.combinations(df, list(c("a", "b"), "c"))
add.all.combinations(df, list(c("a", "b", "c")))Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.