add_static: Add nodes and edges

In sigmajs: Interface to 'Sigma.js' Graph Visualization Library

Description

Add nodes or edges.

Usage

sg_add_nodes(sg, data, delay, ..., cumsum = TRUE)

sg_add_edges(sg, data, delay, ..., cumsum = TRUE, refresh = FALSE)

Arguments

sg	An object of class sigmajsas intatiated by sigmajs.
data	Data.frame (or list) of nodes or edges.
delay	Column name containing delay in milliseconds.
...	Any column name, see details.
cumsum	Whether to compute the cumulative sum of the delay.
refresh	Whether to refresh the graph after node is dropped, required to take effect, if you are running force the algorithm is killed and restarted at every iteration.

Details

The delay helps for build dynamic visualisations where nodes and edges do not appear all at the same time. How the delay works depends on the cumsum parameter. if TRUE the function computes the cumulative sum of the delay to effectively add each row one after the other: delay is thus applied at each row (number of seconds to wait before the row is added *since the previous row*). If FALSE this is the number of milliseconds to wait before the node or edge is added to the visualisation; delay is used as passed to the function.

Value

A modified version of the sg object.

Examples

# initial nodes
nodes <- sg_make_nodes()

# additional nodes
nodes2 <- sg_make_nodes()
nodes2$id <- as.character(seq(11, 20))

# add delay
nodes2$delay <- runif(nrow(nodes2), 500, 1000)

sigmajs() %>%
  sg_nodes(nodes, id, label, size, color) %>%
  sg_add_nodes(nodes2, delay, id, label, size, color)
  
edges <- sg_make_edges(nodes, 25)
edges$delay <- runif(nrow(edges), 100, 2000)

sigmajs() %>%
  sg_force_start() %>%
  sg_nodes(nodes, id, label, size, color) %>% 
  sg_add_edges(edges, delay, id, source, target, cumsum = FALSE) %>%
  sg_force_stop(2300) # stop after all edges added

sigmajs documentation built on July 8, 2020, 5:16 p.m.