Extract parts of a sparse spam
matrix
Usage
# S4 method for class 'spam,character,character,logical'
x[i, j, ..., drop = TRUE]
# S4 method for class 'spam,character,character,missing'
x[i, j, ..., drop = TRUE]
# S4 method for class 'spam,character,missing,logical'
x[i, j, ..., drop = TRUE]
# S4 method for class 'spam,character,missing,missing'
x[i, j, ..., drop = TRUE]
# S4 method for class 'spam,missing,character,logical'
x[i, j, ..., drop = TRUE]
# S4 method for class 'spam,missing,character,missing'
x[i, j, ..., drop = TRUE]