get_proto_graph: 'get_proto_graph'
In cjcallag/migratr: What the Package Does (One Line, Title Case)

Description Usage Arguments Details Author(s)

View source: R/data_process.R

Produce a proto_graph object that can be laid as a network, map, or geocoded network on a map.

1	get_proto_graph(edges, nodes, directed = FALSE, centroid = TRUE)

`edges`	A `data.frame` containing a symbolic edge list in the first two columns. Additional columns are considered as edge attributes.
`nodes`	A `data.frame` and object of class `sf` containing the node metadata. See details below.
`directed`	Logical, whether or not to create a directed graph.
`centroid`	Logical, whether or not to calculate the centroid for each geometry in the `nodes`. See details below.

nodes must be a data.frame with vertex metadata. The first column of the table is assume to contain the symbolic vertex names, this will be added to the graphs as the 'name' vertex attribute. Additionally, as an object of class sf it must include the intended geometry for each vertex.

centroid is used to calculate the geographic position of each node when the network is represented on a map. As a default, the argument is set to TRUE and will calculate the centroid for the provided geometry. If FALSE the user will have to provide a node latitude and longitude for graphing.

Christopher Callaghan, cjcallag@nps.edu

cjcallag/migratr documentation built on Dec. 15, 2019, 9:42 p.m.