graph_to_sf: Convert an igraph object with lon/lat attributes to an SF...

In dSHARP-CMU/konigsbergr: Find Paths Through Bridges On A Map

Description

This expects graph to have a lat and lon vertex attribute, however you may pass in alternate numeric vectors to v_lat and v_lon.

Usage

graph_to_sf(graph, v_lat = igraph::vertex_attr(graph, "lat"),
  v_lon = igraph::vertex_attr(graph, "lon"))

edges_to_sf(graph, v_lat = igraph::vertex_attr(graph, "lat"),
  v_lon = igraph::vertex_attr(graph, "lon"))

nodes_to_sf(graph, v_lat = igraph::vertex_attr(graph, "lat"),
  v_lon = igraph::vertex_attr(graph, "lon"))

Arguments

graph	An igraph object
v_lat	Numeric. Latitude values for each vertex
v_lon	Numeric. Longitude values for each vertex

Value

A named list with an edges and a nodes sfc object.

Functions

• edges_to_sf: Return only the edges as an st_linestring object

• nodes_to_sf: Return only the nodes as an st_point object

dSHARP-CMU/konigsbergr documentation built on Sept. 11, 2019, 3:55 p.m.