This layout puts all nodes on a line, possibly sorted by a node attribute. If circular = TRUE the nodes will be laid out on the unit circle instead. In the case where the sort.by attribute is numeric, the numeric values will be used as the x-position and it is thus possible to have uneven spacing between the nodes.
circular: Logical. Should the layout be transformed to a circular representation. Defaults to FALSE.
sort.by: The name of a node variable to sort the nodes by.
use.numeric: Logical. Should a numeric sort.by attribute be used as the actual x-coordinates in the layout. May lead to overlapping nodes. Defaults to FALSE
offset: If circular = TRUE, where should it begin. Defaults to pi/2 which is equivalent to 12 o'clock.
weight: A weight for each node. Nodes will be spread out according to their weight so that nodes with heigher weight will have more space around them. Ignored if use.numeric = TRUE
Returns
A data.frame with the columns x, y, circular as well as any information stored as node variables in the tbl_graph object. Further, if circular = FALSE a width column and if circular = TRUE a start, end, and r0 column.