sigmajs (version 0.1.1)

sg_add_nodes: Add nodes and edges

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.

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.

Examples

# NOT RUN {
# 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

# }

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