as.fact: Build fact

In jangorecki/data.cube: OLAP cube data type

Description

Build fact

Usage

as.fact(x, ...)

## Default S3 method:
as.fact(x, id.vars = character(),
  measure.vars = character(), fun.aggregate = sum, ..., measures = NULL)

## S3 method for class 'data.table'
as.fact(x, id.vars = as.character(key(x)),
  measure.vars = setdiff(names(x), id.vars), fun.aggregate = sum, ...,
  measures = NULL)

Arguments

x	data.table build dimension based on that dataset.
id.vars	character vector of all dimension's foreign keys.
measure.vars	character vector, column names of measures.
fun.aggregate	function default sum.
measures	list of measures class objects, useful if various measures needs to have different fun.aggregate.
...	arguments to fun.aggregate.

Value

fact class object.

See Also

fact, measure, dimension, data.cube

Examples

library(data.table)
dt = data.table(a=rep(1:6,2), b=letters[1:3], d=letters[1:2], z=1:12*sin(1:12))
ff = as.fact(x = dt,
             id.vars = c("a","b","d"),
             measure.vars = "z")
str(ff)

jangorecki/data.cube documentation built on Aug. 22, 2019, 4:15 p.m.