Skip to contents

Aggregate lines based on overlap with target network

Source: R/network_overline.R
network_overline.Rd

Aggregate lines based on overlap with target network

Usage

network_overline(
  target_network,
  lines,
  attr,
  target_network_split = 100,
  fun = sum,
  join_dist = 10
)

Arguments

target_network

sf. A spatial object representing the target network.

lines

sf. A spatial object representing the lines to aggregate.

attr

String. The attribute to aggregate the lines by.

target_network_split

Integer (Default 100). If not NA, network is split in segments of defined meters.

fun

Method (Default base::sum). Function to summarise the attributes by.

join_dist

Integer (Default 10). Meters to consider when joining routes and network segments.

Value

A spatial object of the target network, extended with the aggregated values.

Details

This method allows for the lines aggregation. Given a target network, it identifies (using stplanr::rnet_join()) the segments corresponding to each line and uses them to aggregate the attribute defined in the parameters.

It provides an alternative to GTFShift::get_route_frequency_hourly() with the attribute overline=TRUE, which creates an aggregated network based on the lines overlap. Instead, GTFShift::network_overline() finds, for each network segment, the overlapping lines and aggregates their attr values, using fun.

See also

stplanr::rnet_join()

Examples

if (FALSE) { # \dontrun{
gtfs <- GTFShift::load_feed("https://operator.com/gtfs.zip")
target_network = st_read("network_centerlines.gpkg")
frequency_analysis <- GTFShift::get_route_frequency_hourly(gtfs, overline=FALSE)
GTFShift::network_overline(
  target_network,
  frequency_analysis |> filter(arrival_hour==8),
  attr = "frequency"
)
} # }