Extract parts of a sparse spam
matrix
# S4 method for spam,character,character,logical [(x, i, j, ..., drop = TRUE) # S4 method for spam,character,character,missing [(x, i, j, ..., drop = TRUE) # S4 method for spam,character,missing,logical [(x, i, j, ..., drop = TRUE) # S4 method for spam,character,missing,missing [(x, i, j, ..., drop = TRUE) # S4 method for spam,missing,character,logical [(x, i, j, ..., drop = TRUE) # S4 method for spam,missing,character,missing [(x, i, j, ..., drop = TRUE)
x | object to extract from. |
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i | row identifiers. |
j | column identifiers. |
... | additional arguments. |
drop | logical indicating that dimensions should be dropped. |