[.DataFrameStack {gmGeostats}

Extract rows of a DataFrameStack

Description

Extract rows (and columns if you know what you are doing) from a stacked data frame

Usage

## S3 method for class 'DataFrameStack'
x[i = NULL, j = NULL, ..., drop = FALSE]

Arguments

x

DataFrameStack() object

i

row indices, names or logical vector of appropriate length (i.e. typically locations, observations, etc)

j

column indices, names or logical vector of appropriate length. DO NOT USE if you are not sure what you are doing. The result will be a conventional data.frame, probably with the stacking structure destroyed.

...

generic parameters, ignored.

drop

logical, if selection results in one single row or column selected, return a vector?

Value

the DataFrameStack or data.frame of the selected rows and columns.

Examples

ar = array(1:30, dim = c(5,2,3), dimnames=list(obs=1:5, vars=c("A","B"), rep=1:3))
dfs = DataFrameStack(ar, stackDim="rep")
dfs[1:2,]
stackDim(dfs[1:2,])