View source: R/join_node_attrs.R
join_node_attrs | R Documentation |
Join new node attribute values in a left join using a data frame. The use of a left join in this function allows for no possibility that nodes in the graph might be removed after the join.
join_node_attrs(graph, df, by_graph = NULL, by_df = NULL)
graph |
A graph object of class |
df |
The data frame to use for joining. |
by_graph |
Optional specification of the column in the graph's internal
node data frame for the left join. If both |
by_df |
Optional specification of the column in |
A graph object of class dgr_graph
.
Other node creation and removal:
add_n_node_clones()
,
add_n_nodes()
,
add_n_nodes_ws()
,
add_node()
,
add_node_clones_ws()
,
add_node_df()
,
add_nodes_from_df_cols()
,
add_nodes_from_table()
,
colorize_node_attrs()
,
copy_node_attrs()
,
create_node_df()
,
delete_node()
,
delete_nodes_ws()
,
drop_node_attrs()
,
layout_nodes_w_string()
,
mutate_node_attrs()
,
mutate_node_attrs_ws()
,
node_data()
,
recode_node_attrs()
,
rename_node_attrs()
,
rescale_node_attrs()
,
set_node_attr_to_display()
,
set_node_attr_w_fcn()
,
set_node_attrs()
,
set_node_attrs_ws()
,
set_node_position()
# Set a seed
suppressWarnings(RNGversion("3.5.0"))
set.seed(23)
# Create a simple graph
graph <-
create_graph() %>%
add_n_nodes(n = 5) %>%
add_edges_w_string(
edges = "1->2 1->3 2->4 2->5 3->5")
# Create a data frame with node ID values and a
# set of numeric values
df <-
data.frame(
values = round(rnorm(6, 5), 2),
id = 1:6)
# Join the values in the data frame to the
# graph's nodes; this works as a left join using
# identically-named columns in the graph and the df
# (in this case the `id` column is common to both)
graph <-
graph %>%
join_node_attrs(
df = df)
# Get the graph's internal ndf to show that the
# join has been made
graph %>% get_node_df()
# Get betweenness values for each node and
# add them as a node attribute (Note the
# common column name `id` in the different
# tables results in a natural join)
graph <-
graph %>%
join_node_attrs(
df = get_betweenness(.))
# Get the graph's internal ndf to show that
# this join has been made
graph %>% get_node_df()
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