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Subset SSFS

Source: R/companions.R
ssfs_subset.Rd

A handy function that outputs a subset of an input ssfs. You can specify whether you want to remove or retain a based on a set of itin_ids or route_ids.

Usage

ssfs_subset(
  ssfs,
  subset_id,
  operation = c("retain", "remove"),
  id_type = c("itin_id", "route_id")
)

Arguments

ssfs

An input SSFS

subset_id

The set of itin_ids or route_ids that you would like to remove or retain

operation

Specify whether you would like the output ssfs to retain (default) or remove the data associated with subset_id

id_type

Specify whether subset_id is itin_id (default) or route_id

Value

A SSFS

Examples

#Create a subset SSFS that only includes data pertaining to route 160 of the mileend network
ssfs_160 <- ssfs_subset(mileend,subset_id="160",id_type="route_id")

#create a subset SSFS that excludes secondary itineraries for various routes in of the mileend network
ssfs_mileend_clean <- ssfs_subset(mileend,subset_id=c("160_0_2","161_1_2"),operation="remove")