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NEWS.md
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NEWS.md
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# DiagrammeR 1.0.6.9000 (Unreleased)
* Added the `envir` argument to the `grViz` and `replace_in_spec` functions.
# DiagrammeR 1.0.6.1
* Removed the `set_df_as_node_attr()`, `set_df_as_edge_attr()`, and `get_attr_dfs()` functions.
# DiagrammeR 1.0.5
* Removes the ability to save a DiagrammeR graph object as a Gephi file (.gexf) since the **rgexf** package is no longer maintained
# DiagrammeR 1.0.0
* Added the helper functions `node_aes()`, `node_data()`, `edge_aes()`, and `edge_data()` to facilitate the binding of node and edge aesthetic and data attribute values; several functions now have namesake arguments that accept these functions' output.
* Information about the graph is now displayed in the console when the graph object is called
* Error messages are now more helpful and try to provide pointers for the more common errors
# DiagrammeR 0.9.2
* Added functions to generate 2D and 3D grid graphs (`add_grid_2d()` and `add_grid_3d()`)
* Added `_ws` (with selection) variants of the `mutate_[node/edge]_attrs()` functions for mutating node or edge attributes for only those nodes/edges in an active selection
* Incorporated an `edges` argument into the `select_edges()` function in order to filter the selection of edges to a set of edge ID values
* Reduced the dependency on R to version >= 3.2.0
# DiagrammeR 0.9.2
* Added functions to generate 2D and 3D grid graphs (`add_grid_2d()` and `add_grid_3d()`)
* Added `_ws` (with selection) variants of the `mutate_[node/edge]_attrs()` functions for mutating node or edge attributes for only those nodes/edges in an active selection
* Incorporated an `edges` argument into the `select_edges()` function in order to filter the selection of edges to a set of edge ID values
* Reduced the dependency on R to version >= 3.2.0
# DiagrammeR 0.9.1
* Simplified many functions internally
* Added a default print method for graph objects
* Allowed use of bare node or edge attribute names in many functions
* Implemented graph actions as a means to run one or more functions at every graph transformation step; for example, this can be used to automatically update a node attribute such as `betweenness` whenever modifications to the graph are made (e.g., adding nodes, removing edges, etc.)
* Data frames can be set as node or edge attributes with the `set_df_as_node_attr()` and `set_df_as_edge_attr()` functions; the `get_attr_dfs()` function allows for retrieval of stored data frame data
* Added two new graph-generating functions (`add_gnp_graph()`, `add_pa_graph()`, and `create_complement_graph()`)
* Added functions to clone existing nodes and edges (`add_n_node_clones()` and `add_edge_clone()`)
* Added several `count_*` functions (`count_asymmetric_node_pairs()`, `count_automorphisms()`, etc.)
* Added new functions to obtain graph properties (`get_adhesion()`, `get_girth()`, `get_reciprocity()`, etc.)
* Added several `is_*` functions for graph and edge properties (e.g., `is_edge_loop()`, `is_graph_dag()`, etc.)
* The `mutate_node_attrs()` and `mutate_edge_attrs()` functions now have simpler and more powerful interfaces for mutating node and edge attributes
* Graphs can be easily saved to disk (and read from disk) using the `save_graph()` and `open_graph()` functions
# DiagrammeR 0.9.0
* Modified basic structure of node and edge data frames such that ID values are automatically set as integer values
* Just as nodes do, edges now have edge ID values (they can be obtained using `get_edge_ids()` and they can be used directly in the `select_edges_by_edge_id()` function)
* When created, a graph object automatically generates a graph ID and graph name (which can be modified using `set_graph_name()`)
* So long as node `label` values are unique, they may now be used to compose edges using the `add_edge()` function with `use_labels = TRUE`
* Quickly and flexibly add color to nodes and edges using the `colorize_node_attrs()` and `colorize_edge_attrs()` functions
* Added functions to selectively modify existing node and edge attributes: `copy_[node/edge]_attrs()`, `drop_[node/edge]_attrs()`, `mutate_[node/edge]_attrs()`, `recode_[node/edge]_attrs()`, `rename_[node/edge]_attrs()`, and `rescale_[node/edge]_attrs()`.
* New node and edge attributes can now be easily added to a graph via a data frame using the `join_node_attrs()` and `join_edge_attrs()` functions
* Several graph generators are available for quickly adding graph primitives to a graph object (`add_balanced_tree()`, `add_cycle()`, `add_full_graph()`, `add_path()`, `add_prism()`, and `add_star()`)
* All traversal functions can now migrate numeric node or edge attribute values to the traversed edges (e.g., `trav_out_edge()`, `trav_in_node()`) by providing an attribute name to `copy_attrs_from`; for those traversal functions where nodes or edges may receive multiple values, one can specify an aggregation type in their `agg` argument (e.g,. `trav_in_node()`, `trav_both_edge()`)
* Multiple conditions can be specified for all traversal types and for the `select_nodes()` and `select_edges()` functions, plus, they are much easier to write
* Added the `mk_cond()` helper function for creating conditions for any of the traversal functions (`trav_...()`), and, the `select_nodes()` and `select_edges()` functions; this helper allows for easier composition of selection/traversal conditions using variables and/or function calls
* With a selection of edges one can now use `select_rev_edges_ws()` to transform that selection to that of the selected edges' reverse edges (where available); the option is there to add the reverse edges to the edge selection or to simply replace the current selection
* Caching attributes for later use has been made simpler with a collection of `cache_...()` functions (or, set the cache explicitly using `set_cache()`); get the graph's cache using the `get_cache()` function
* Added functions to allow for layout control of nodes (`set_node_position()`, `layout_nodes_w_string()`, `nudge_node_positions()`)
* Added functions to convert **DiagrammeR** graphs to **igraph** graphs and vice versa (`to_igraph()`, `from_igraph()`)
* Now you can create a graph from an adjacency matrix (`from_adj_matrix()`)
* Added functions to get community membership with a variety of algorithms: `get_cmty_edge_btwns()`, `get_cmty_fast_greedy()`, `get_cmty_l_eigenvec()`, `get_cmty_louvain()`, and `get_cmty_walktrap()`.
* Added functions to determine similarity coefficient scores for graph nodes: `get_dice_similarity()` and `get_dice_similarity()`.
* Constraint scores for nodes can now be determined using the `get_constraint()` function
* Functions for getting information on nodes neighbors have been added: `get_nbrs()`, `get_non_nbrs()`, `get_similar_nbrs()`.
* Groups of nodes that are weakly or strongly connected components can be determined using the `get_w_connected_cmpts()` and `get_s_connected_cmpts()` functions
* Get articulation points (i.e., nodes that, when removed, disconnect the graph) with the `get_articulation_points()` function
* Obtain centrality measures for graph nodes using the `get_closeness()` and `get_betweenness()` functions
* Get the minimum-spanning tree subgraph from a graph with weighted edges using the `get_min_spanning_tree()` function
* The edge direction may be reversed for an entire graph (`rev_edge_dir()`) or for part of a graph using an edge selection (`rev_edge_dir_ws()`)
* Depth-first search and breadth-first search algorithms are available in the `do_dfs()` and `do_bfs()` functions
* Degree data for plots can now be easily obtained using the `get_degree_distribution()` and `get_degree_histogram()` functions
* Global graph attributes are now more easily modifiable using a set of functions for this purpose: `add_global_graph_attrs()`, `clear_global_graph_attrs()`, `delete_global_graph_attrs()`, `get_global_graph_attrs()`, `set_global_graph_attrs()`
* Added option to display different text labels on nodes via the `display` node attribute; this is easily set with the `set_node_attr_to_display()` function
* Rewrote many graph functions (e.g. traversals) so that they are faster for very large graphs
* A log of all graph functions that directly modify the graph is now part of the graph object (`graph$graph_log`)
* Added functionality to automatically generate graph backups at every graph modification; this is in the form of RDS files deposited in a subdirectory (name is based on the graph ID) of the working directory; the option (`write_backups`, set to `FALSE` by default) is available in all functions that initialize a graph object (`create_graph()`, `create_random_graph()`, `from_igraph()`, `from_adj_matrix()`)
# DiagrammeR 0.8
* Revised many graph functions so they work better together
* Added many **testthat** tests to maintain the quality of the graph functions
* Added functions `create_random_graph()`, `import_graph()`, `combine_graphs()`, `country_graph()` and `select_graph_from_series()`
* Added support for **visNetwork** graphs as a rendering option with `render_graph()`
# DiagrammeR 0.7
* Renamed functions `graphviz_graph()` and `graphviz_render()` to `create_graph()` and `render_graph()`, respectively
* Removed function `graphviz_export()` (exporting now handled with `render_graph()`)
* Added several new functions to inspect, analyze, and modify graphs: `display_graph_object()`, `node_info()`, `edge_info()`, `node_present()`, `edge_present()`, `get_nodes()`, `get_edges()`, `get_predecessors()`, `get_successors()`, `node_count()`, `edge_count()`, `is_graph_empty()`, `is_graph_directed()`, `add_node()`, `add_edges()`, `delete_node()`, `delete_edge()`, `node_type()`, `edge_relationship()`, `create_series()`, `add_to_series()`, `remove_from_series()`, `graph_count()`, `subset_series()`, `trigger_script()`, `render_graph_from_series()`, and `series_info()`
# DiagrammeR 0.6
* Added several functions to work with graphs: `create_nodes()`, `create_edges()`, `combine_nodes()`, `combine_edges()`, `scale_nodes()`, `scale_edges()`, `get_nodes()`, `node_info()`, `graphviz_graph()`, `graphviz_render()`, and `graphviz_export()`
* Removed the `graphviz_nodes_edges_df()` and `graphviz_single_df()` functions
# DiagrammeR 0.5
* Added support for subgraphs and Gantt charts in **mermaid** diagrams
* Added function `graphviz_nodes_edges_df()` for generating **Graphviz** **DOT** code that defines nodes and edges (and their attributes) from data in two data frames: one for nodes, the other for the edge operations
* Added function `graphviz_single_df()` for generating **Graphviz** **DOT** code from a single data frame
* Incorporated the new substitution operators `@_{...}` or `@^{...}` in `grViz` statements for subscripting and superscripting, respectively
# DiagrammeR 0.4
* Added support for substitution in **Graphviz** graph specifications
* Added support for **Graphviz** diagrams in the **Shiny** app
# DiagrammeR 0.3
* Added support for the **Graphviz** **neato**, **twopi**, and **circo** engines
# DiagrammeR 0.2
* Added the **viz.js** library to enable **Graphviz** support
# DiagrammeR 0.1
* Initial release
* Incorporated into the **htmlwidgets** framework
* Added basic **shiny** app