tractor.base (version 3.3.3.1)

[,SparseArray,ANY,ANY-method: Indexing methods

Description

Indexing methods for SparseArray and MriImage objects. For the latter class, arguments are passed to the equivalents for array or SparseArray, except where i is another MriImage object, where its nonzero region will be used to provide the indices. For SparseArray, indexing may be blank, or by numeric vector or matrix.

Usage

# S4 method for SparseArray,ANY,ANY
[(x, i, j, ..., drop = TRUE)
# S4 method for SparseArray,ANY,ANY
[(x, i, j, ...) <- value
# S4 method for MriImage,missing,missing
[(x, i, j, ..., drop = TRUE)
# S4 method for MriImage,ANY,missing
[(x, i, j, ..., drop = TRUE)
# S4 method for MriImage,missing,ANY
[(x, i, j, ..., drop = TRUE)
# S4 method for MriImage,ANY,ANY
[(x, i, j, ..., drop = TRUE)
# S4 method for MriImage,MriImage,missing
[(x, i, j, ..., drop = TRUE)
# S4 method for MriImage,missing,missing
[(x, i, j, ...) <- value
# S4 method for MriImage,ANY,missing
[(x, i, j, ...) <- value
# S4 method for MriImage,missing,ANY
[(x, i, j, ...) <- value
# S4 method for MriImage,ANY,ANY
[(x, i, j, ...) <- value
# S4 method for MriImage,MriImage,missing
[(x, i, j, ...) <- value

Value

A vector, array or SparseArray.

Arguments

x

An object of the appropriate type.

i, j, ...

Indexing objects.

drop

Scalar value: should unitary dimensions be dropped?

value

New value(s) for replacement forms.

Author

Jon Clayden