Recode a set of edge attribute values
Within a graph's internal edge data frame (edf), recode character or numeric edge attribute values. Optionally, one can specify a replacement value for any unmatched mappings.
recode_edge_attrs( graph, edge_attr_from, ..., otherwise = NULL, edge_attr_to = NULL )
graph |
A graph object of class |
edge_attr_from |
The name of the edge attribute column from which values will be recoded. |
... |
Single-length character vectors with the recoding instructions.
The first component should have the value to replace and the second should
have the replacement value (in the form |
otherwise |
An optional single value for recoding any unmatched values. |
edge_attr_to |
An optional name of a new edge attribute to which the recoded values will be applied. This will retain the original edge attribute and its values. |
A graph object of class dgr_graph.
Other Edge creation and removal:
add_edge_clone(),
add_edge_df(),
add_edges_from_table(),
add_edges_w_string(),
add_edge(),
add_forward_edges_ws(),
add_reverse_edges_ws(),
copy_edge_attrs(),
create_edge_df(),
delete_edges_ws(),
delete_edge(),
delete_loop_edges_ws(),
drop_edge_attrs(),
edge_data(),
join_edge_attrs(),
mutate_edge_attrs_ws(),
mutate_edge_attrs(),
rename_edge_attrs(),
rescale_edge_attrs(),
rev_edge_dir_ws(),
rev_edge_dir(),
set_edge_attr_to_display(),
set_edge_attrs_ws(),
set_edge_attrs()
# Create a random graph using the
# `add_gnm_graph()` function
graph <-
create_graph() %>%
add_gnm_graph(
n = 4,
m = 6,
set_seed = 23) %>%
set_edge_attrs(
edge_attr = rel,
values = c("a", "b", "a",
"c", "b", "d"))
# Get the graph's internal edf
# to show which edge attributes
# are available
graph %>% get_edge_df()
# Recode the `rel` node
# attribute, creating a new edge
# attribute called `penwidth`;
# here, `a` is recoded to `1.0`,
# `b` maps to `1.5`, and all
# other values become `0.5`
graph <-
graph %>%
recode_edge_attrs(
edge_attr_from = rel,
"a -> 1.0",
"b -> 1.5",
otherwise = 0.5,
edge_attr_to = penwidth)
# Get the graph's internal edf
# to show that the node
# attribute values had been
# recoded and copied into a
# new node attribute
graph %>% get_edge_df()Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.