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ggraph (development version)

ggraph 2.2.2

  • Fixed a bug in the collapse functionality of get_edges() (#362)
  • General upkeep and compatibility with ggplot2 v4.0.0

ggraph 2.2.1

  • Rolling back use of native pipe (#364 and #365)

ggraph 2.2.0

  • Fix a precision bug in circle pack layout (#345)
  • GeomEdgeTile now uses edge_width instead of edge_size for the border
  • Fix a bug in geom_edge_parallel() when used with edge labels. Edges are now correctly offset, though label may still overlap (#227)
  • Fix a bug with auto layout on undirected trees (#247)
  • Fix a bug in get_con() that would lead to wrong matching of additional data (#249)
  • Allow na.rm in geoms (#301)
  • If check_overlap = TRUE in geom_node_text() the rendering order is reversed so that the top nodes are rendered, not the bottom ones
  • Updated guides to the new ggplot2 interface. For guide_edge_direction(), this update adds the option to use labels instead of an arrow using the labels argument.
  • create_layout() now returns a modified tibble rather than a data.frame
  • The ... in get_nodes(), get_edges(), and get_con() now accepts tidy evaluation. get_nodes() and get_con() will get evaluated on the node data in the original order (layouts may reorder nodes), and get_edges() will get evaluated on the edge data (#272)
  • The linear layout has gained a weight argument allowing you to set how much space each node occupy. Further, the layout now calculates statistics so that it can be used in conjunction with geom_node_tile() and geom_node_arc_bar()
  • New layout added. Cactustree is a hierarchical layout optimised for hierarchical edge bundling by placing nodes as budding circles on the periphery of their parent (#226)
  • Updated layout functions from the graphlayouts package to support grouped and constrained versions (centrality, focus, and stress layouts)
  • Added H Tree layout for binary trees (#58)
  • Added geom_edge_bundle_force(), geom_edge_bundle_path(), and geom_edge_bundle_minimal() (+ variants) to provide support for edge bundling (#267)
  • Add "metro" layout from graphlayouts for metroline like layouts
  • Add layout_sf(), geom_node_sf() and geom_edge_sf() to support plotting of sfnetwork objects (#275)

ggraph 2.1.0

  • Update errors to use cli
  • Use vctrs internally
  • Add binned edge scales
  • Fix a bug where removing the full data with a filter would throw an error
  • Make sure all lyaout functions now correctly merge the layout with the node data without getting duplicate column names
  • Fixed a bug in the start_cap implementation that would cause edges consisting of only two points to disappear
  • Fixed a bug in facet_graph() when using . on either dimension (#313)
  • Move dendrogram layout calculations to compiled code to avoid R's recursion stack limitations (#311)
  • Fixed a bug in the circle pack algorithm that could result in overlapping circles (#305)

ggraph 2.0.6

  • Fix vignette errors on CRAN

ggraph 2.0.5

  • Fix deprecation of std::random_shuffle in C++14 by specifyin C++11 as the compile version

ggraph 2.0.4

  • Fix bug in faceting functions where using algorithms based on sampling directly would result in errors
  • Move CI to GitHub Actions
  • Warn if a precalculated layout is passed to layout in create_layout() (#208)
  • Warn when setting dim to a value higher than 2 in igraph layouts (#160)
  • Fix bug when trying to plot a graph with no edges (#214)
  • Fix a bug in edge geoms due to a typo (#246)
  • Fix a bug in edge geoms where setting label_colour to NA would turn it off instead of inheriting the colour of the edge (#238)
  • Fix a bug in edge geoms that prevented edge labels from being parsed as expressions (#245)
  • Improve performance of dendrogram layout when calculating depth (#248)
  • Fix a bug in hive layout when segmenting by a factor with unused levels (#252)
  • Fix a bug in capping of path due to updates in grid. Setting cap unit to native now works as expected again (#254)
  • Fix a bug in get_con() that would require input to be sorted in the from vector (#258)

ggraph 2.0.3

  • Fix bug in geom_edge_elbow() that resulted in duplicated group columns in the data.

ggraph 2.0.2

  • Remove reshape2 dependency

ggraph 2.0.1

  • Fix bug in ggraph that will surface with the next grid release
  • Deprecate qgraph() in favour of autograph() to avoid name collision with qgraph::qgraph(). autograph() is now also a generic with a default method, so you can provide your own specific ggraph plot method for your network classes

ggraph 2.0.0

This release is a major release including many new features, bug fixes and some breaking changes.

Breaking changes

  • Use tidygraph as the central data format. The results of this are several:

    • All graph object supported by tidygraph are now supported on even footing in ggraph. All layouts are now available to any graph class
    • BREAKING The "even" layout for dendrograms are no more, but can be obtained by using the "dendrogram" layout with height = NULL
    • BREAKING All layouts uses NSE for arguments that refer to node and edge variables, instead of passing in strings that refer to the variable name.
    • All examples and vignettes now uses tidygraph for graph manipulation resulting in much cleaner code.
    • tree_apply has been removed in favour of using tidygraph::map_bfs_*
    • geom_edge_elbow is no longer only available to dendrogram objects
    • tidygraph algorithms can now be used directly within ggraph functions. E.g. you can have sort.by = node_rank_hclust() in your specification of a linear layout, or aes(colour = group_infomap()) in node geoms

    This big change fixes #21, #72, #79, and #81. A vignette has been added to describe the integration in more detail

  • The curvature argument from geom_edge_arc() and geom_edge_hive() as well as the spread argument from geom_edge_fan() has been deprecated in favor of the new strength argument.

  • ggraph plots now gets constructed with grid and axes removed from the default theme.

New features

  • Add equal-angle and equal-daylight unrooted tree layouts (#59)
  • Interface with the graphlayouts package and make all its layouts available. The auto layout now uses the stress layout for standard graphs (sparse stress) for larger graphs.
  • Added length argument to the dendrogram layout to allow the layout to be based on edge length rather than node heights (#124).
  • Added geom_edge_parallel() for drawing multiedges as parallel lines (#191)
  • Added fabric layout to create biofabric plots. Also added geom_node_range() and geom_edge_span() for visualising such layouts (#47)
  • Added geom_edge_bend() for drawing soft elbows (#45)
  • Added geom_node_voronoi() for displaying nodes as voronoi tiles (#100)
  • Added qgraph() for quickly creating a standard network plot for explorative purpose (#94)
  • All non-straight line-based edge geoms now has a strength parameter that controls their deviation from a straight line. 0 will always give a straight line while 1 will be their natural look. Numbers outside this range may look weird (#97)
  • Added weight and mode arguments to get_con() that are passed on to the shortest path calculations (#89).
  • Add matrix layout and geom_edge_point() (#23)
  • Added geom_edge_tile() for use with matrix layouts (#141)
  • Manual layouts are now easier to specify. You can pass a matrix or data.frame to the layout parameter that will then be used. Also, if an x and y argument is present, the auto layout will choose the manual layout. (#91)
  • Custom layout functions are now much more flexible. And can either return a data.frame or an object coercible to a tbl_graph. In the latter case the node table will be used as layout and the graph will be attached. This allows direct use of the particles package as a layout engine as a side effect. (#88)

Bug fixes

  • Fixed numerous bugs and issues pertaining to the group aesthetic handling in many edge geoms (#190, #193).
  • Edge geoms no longer throws an error when all edges are completely capped (#176)
  • Fixed a bug that prevented edge capping from being used with *2 variants of edge geoms (#167)
  • Fix bug in edge capping that could lead to edges extending to (0,0) (#163)
  • Fix bug affecting faceting of capped edges (#140)
  • Character aesthetics are no longer cast to factors in edge geoms (#131)
  • Fix a bug where start capping was ignored if the previous edge had been completely removed by capping (#150)
  • Fix offsetting bug in edge label drawing when some labels are empty strings and label_parse = TRUE (#159)
  • Fixed a bug resulting in the wrong mapping of additional values to connections (#122, #134)
  • Fixed a bug when using facet_graph() with data from both tbl_df and data.frame
  • Added override.aes to guide_edge_direction()
  • Fix bug with extracting edges from an empty graph (#76)
  • Fixed bug causing shifts in edge aesthetics when one or more edges were completely clipped (#62, #115)
  • Fixed bug when clipping completely orthogonal points that produced additional lines going to (0,0) (#70, #84, #103)

Other

  • Changed license to MIT
  • Update roxygen documentation to use markdown and reduce duplication (#95)