VirtualArray-single-bracket-method: Indexing to extract subsets of a 'codeVirtualArray'-class...

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Indexing to extract subsets of a 'codeVirtualArray'-class object

Description

Single bracket '[' refers to indices and names within the 'VirtualArray'-class object. Use double brackets to extract layers based on their names (in the @stack).

Usage

## S4 method for signature 'VirtualArray,ANY,ANY'
x[i, j, ..., drop = TRUE]

Arguments

x	An object from a VirtualArray-derived class.
i	subscript of the first dimension(rows) or vector-like subsetting.
j	subscript of the second dimension (columns).
...	subscript of additional dimensions.
drop	logical in case the result of subsetting is a single element, should the VirtualArray-derived wrapper be dropped?

Value

An object from either the same class as x or the class of its elements.

Examples

ex <- rastex()
# numeric subsetting
firstThree <- ex[1:3]
# character subsetting
second <- ex["d"]
# logical subsetting
subscript <- rep(FALSE, length(ex))
subscript[2] <- TRUE
second2 <- ex[subscript]
data(paleocoastlines)
present<- paleocoastlines["0", ]
allMargin <- paleocoastlines[, "margin"]

via documentation built on May 31, 2023, 8:31 p.m.