网络D3 在 R -> 设置初始放大力网络()

Question

我正在处理一个大网络(1k+个节点，1M+个连接(，我想设置一个自定义的初始缩放，因为标准缩放只关注少数节点，需要花费大量时间才能达到目标比例(在那里我可以看到整个网络(。

这是我的代码：

library(networkD3)
p <- forceNetwork(Links = links, 
Nodes = nodes, 
Source = 'source', 
Target = 'target', 
NodeID = 'name',
Group = 'group', 
Value = "value",
Nodesize = "size",
radiusCalculation = JS("d.nodesize"),
zoom = TRUE, 
arrows = FALSE,
linkWidth = JS("function(d){return d.value;}"),
linkDistance = JS("function(d){return d.value*10}"),
charge = gravity,
opacity = 0.95,
fontSize = 24,
linkColour = "#424242"
)
customJS <- 
"function() { 
d3.selectAll('.node text').style('fill', 'white').attr('stroke-width', '.1px').attr('stroke', '#3f3f3f');
d3.select('body').style('background-color', '#15171a');
simulation = this;
simulation.stop();
for (var i = 0; i < 300; ++i) simulation.tick();
simulation.nodes().forEach( function(d,i) {
d.cx = d.x;
d.cy = d.y;
});
simulation.restart();
}"

g <- htmlwidgets::onRender(p, customJS)
g

Answer 1

下面是一个最小化的、可重复的在渲染时设置比例值的示例。。。

library(networkD3)
p <- forceNetwork(Links = MisLinks, Nodes = MisNodes, Source = "source",
Target = "target", Value = "value", NodeID = "name",
Group = "group", opacity = 0.4, zoom = TRUE)
customJS <- 
'function(el) { 
d3.select(el).select(".zoom-layer").attr("transform", "scale(0.3)")
}'

htmlwidgets::onRender(p, customJS)