View source: R/recode_edge_attrs.R
recode_edge_attrs | R Documentation |
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()
,
add_edge_clone()
,
add_edge_df()
,
add_edges_from_table()
,
add_edges_w_string()
,
add_forward_edges_ws()
,
add_reverse_edges_ws()
,
copy_edge_attrs()
,
create_edge_df()
,
delete_edge()
,
delete_edges_ws()
,
delete_loop_edges_ws()
,
drop_edge_attrs()
,
edge_data()
,
join_edge_attrs()
,
mutate_edge_attrs()
,
mutate_edge_attrs_ws()
,
rename_edge_attrs()
,
rescale_edge_attrs()
,
rev_edge_dir()
,
rev_edge_dir_ws()
,
set_edge_attr_to_display()
,
set_edge_attrs()
,
set_edge_attrs_ws()
# 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()
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