crunch (version 1.3.2)

dataset-update: Update a variable or variables in a dataset

Description

Update a variable or variables in a dataset

Usage

## S3 method for class 'CrunchDataset,character,missing,CrunchVariable':
[[(x, i) <- value
## S3 method for class 'CrunchDataset,ANY,missing,CrunchVariable':
[[(x, i) <- value
## S3 method for class 'CrunchDataset,character,missing,ANY':
[[(x, i) <- value
## S3 method for class 'CrunchDataset,character,missing,CrunchExpr':
[[(x, i) <- value
## S3 method for class 'CrunchDataset,character,missing,CrunchLogicalExpr':
[[(x, i) <- value
## S3 method for class 'CrunchDataset,ANY,ANY,ANY':
[[(x, i) <- value
## S3 method for class 'CrunchDataset':
$(x, name) <- value
## S3 method for class 'CrunchDataset,ANY,missing,list':
[(x, i, j) <- value
## S3 method for class 'CrunchDataset,CrunchExpr,ANY,ANY':
[(x, i, j) <- value

Arguments

x

a CrunchDataset

i

For [, a CrunchLogicalExpr, numeric, or logical vector defining a subset of the rows of x. For [[, see j for the as.list column subsetting.

value

replacement values to insert. These can be crunchExprs or R vectors of the corresponding type

name

like j but for $

j

if character, identifies variables to extract based on their aliases (by default, i.e. when x's useAlias is TRUE); if numeric or logical, extracts variables accordingly. Note that this is the as.list extraction, columns of the dataset rather

Value

• x, modified.