layout_tbl_graph_focus: Place nodes in circles based on distance to a specific node

In ggraph: An Implementation of Grammar of Graphics for Graphs and Networks

Place nodes in circles based on distance to a specific node

Description

This layout constrains node placement to a radius relative to its distance to a given node. It then uses stress majorisation to find an optimal node distribution according to this constraint.

Usage

layout_tbl_graph_focus(
  graph,
  focus,
  weights = NULL,
  niter = 500,
  tolerance = 1e-04,
  group = NULL,
  shrink = 10,
  circular = TRUE
)

Arguments

graph	a tbl_graph object
focus	An expression evaluating to a selected node. Can either be a single integer or a logical vector with a single TRUE element.
weights	An expression evaluated on the edge data to provide edge weights for the layout. Currently ignored for the sparse version
niter	number of iterations during stress optimization
tolerance	stopping criterion for stress optimization
group	An expression evaluating to a grouping of the nodes. If given the layout will keep grouped nodes within an angle range of the origin
shrink	shrink the reserved angle range for a group to increase the gaps between groups
circular	ignored

Value

A data.frame with the columns x, y, circular, distance as well as any information stored as node variables in the tbl_graph object.

Author(s)

The underlying algorithm is implemented in the graphlayouts package by David Schoch

References

Brandes, U., & Pich, C. (2011). More flexible radial layout. Journal of Graph Algorithms and Applications, 15(1), 157-173.

See Also

Other layout_tbl_graph_*: layout_tbl_graph_auto(), layout_tbl_graph_backbone(), layout_tbl_graph_cactustree(), layout_tbl_graph_centrality(), layout_tbl_graph_circlepack(), layout_tbl_graph_dendrogram(), layout_tbl_graph_eigen(), layout_tbl_graph_fabric(), layout_tbl_graph_hive(), layout_tbl_graph_htree(), layout_tbl_graph_igraph(), layout_tbl_graph_linear(), layout_tbl_graph_manual(), layout_tbl_graph_matrix(), layout_tbl_graph_metro(), layout_tbl_graph_partition(), layout_tbl_graph_pmds(), layout_tbl_graph_sf(), layout_tbl_graph_stress(), layout_tbl_graph_treemap(), layout_tbl_graph_unrooted()

ggraph documentation built on May 29, 2024, 2:32 a.m.