select_metadata {aopdata}

Select metadata

Description

Subsets the metadata table by data 'type', 'city', 'year' and 'mode'

Usage

select_metadata(t = NULL, c = NULL, y = NULL, m = NULL)

Arguments

t

Type of data: 'access' or 'grid' (passed from read_ function)

c

City (passed from read_ function)

y

Year of the dataset (passed from read_ function)

m

Transport mode (passed from read_ function)

Value

A data.frame object with metadata subsetted by data type, 'city', 'year' and 'mode'