Place nodes in circles based on distance to a specific node
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.
layout_tbl_graph_focus( graph, focus, weights = NULL, niter = 500, tolerance = 1e-04, circular = TRUE )
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 |
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 |
circular |
ignored |
A data.frame with the columns x, y, circular, distance as
well as any information stored as node variables in the tbl_graph object.
The underlying algorithm is implemented in the graphlayouts package by David Schoch
Brandes, U., & Pich, C. (2011). More flexible radial layout. Journal of Graph Algorithms and Applications, 15(1), 157-173.
Other layout_tbl_graph_*:
layout_tbl_graph_auto(),
layout_tbl_graph_backbone(),
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_igraph(),
layout_tbl_graph_linear(),
layout_tbl_graph_manual(),
layout_tbl_graph_matrix(),
layout_tbl_graph_partition(),
layout_tbl_graph_pmds(),
layout_tbl_graph_stress(),
layout_tbl_graph_treemap(),
layout_tbl_graph_unrooted()
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