Rescale numeric node attribute values
From a graph object of class dgr_graph, take a set of numeric values for a
node attribute, rescale to a new numeric or color range, then write to the
same node attribute or to a new node attribute column.
rescale_node_attrs( graph, node_attr_from, to_lower_bound = 0, to_upper_bound = 1, node_attr_to = NULL, from_lower_bound = NULL, from_upper_bound = NULL )
graph |
A graph object of class |
node_attr_from |
The node attribute containing numeric data that is to be rescaled to new numeric or color values. |
to_lower_bound |
The lower bound value for the set of rescaled values. This can be a numeric value or an X11 color name. |
to_upper_bound |
The upper bound value for the set of rescaled values. This can be a numeric value or an X11 color name. |
node_attr_to |
An optional name of a new node attribute to which the recoded values will be applied. This will retain the original node attribute and its values. |
from_lower_bound |
An optional, manually set lower bound value for the rescaled values. If not set, the minimum value from the set will be used. |
from_upper_bound |
An optional, manually set upper bound value for the rescaled values. If not set, the minimum value from the set will be used. |
A graph object of class dgr_graph.
Other Node creation and removal:
add_n_node_clones(),
add_n_nodes_ws(),
add_n_nodes(),
add_node_clones_ws(),
add_node_df(),
add_nodes_from_df_cols(),
add_nodes_from_table(),
add_node(),
colorize_node_attrs(),
copy_node_attrs(),
create_node_df(),
delete_nodes_ws(),
delete_node(),
drop_node_attrs(),
join_node_attrs(),
layout_nodes_w_string(),
mutate_node_attrs_ws(),
mutate_node_attrs(),
node_data(),
recode_node_attrs(),
rename_node_attrs(),
set_node_attr_to_display(),
set_node_attr_w_fcn(),
set_node_attrs_ws(),
set_node_attrs(),
set_node_position()
# Create a random graph using the
# `add_gnm_graph()` function
graph <-
create_graph() %>%
add_gnm_graph(
n = 5,
m = 10,
set_seed = 23) %>%
set_node_attrs(
node_attr = value,
values = rnorm(
n = count_nodes(.),
mean = 5,
sd = 1) %>% round(1))
# Get the graph's internal ndf
# to show which node attributes
# are available
graph %>% get_node_df()
# Rescale the `value` node
# attribute, so that its values
# are rescaled between 0 and 1
graph <-
graph %>%
rescale_node_attrs(
node_attr_from = value,
to_lower_bound = 0,
to_upper_bound = 1)
# Get the graph's internal ndf
# to show that the node attribute
# values had been rescaled
graph %>% get_node_df()
# Scale the values in the `value`
# node attribute to different
# shades of gray for the `fillcolor`
# and `fontcolor` node attributes
graph <-
graph %>%
rescale_node_attrs(
node_attr_from = value,
to_lower_bound = "gray80",
to_upper_bound = "gray20",
node_attr_to = fillcolor) %>%
rescale_node_attrs(
node_attr_from = value,
to_lower_bound = "gray5",
to_upper_bound = "gray95",
node_attr_to = fontcolor)
# Get the graph's internal ndf
# once more to show that scaled
# grayscale colors are now available
# in the `fillcolor` and `fontcolor`
# node attributes
graph %>% get_node_df()Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.