为强制定向网络中的每个链接指定颜色，networkD3 :: forceNetwork（） [英] Specify colors for each link in a force directed network, networkD3::forceNetwork()

问题描述

问题是在R中使用 networkD3 :: forceNetwork 基于链接的值或权重指定两种不同的颜色。例如，蓝色表示链接权重大于1，黑色表示链接权重小于1。

The question is to specify two different colors based on the Value or weight of the link using networkD3::forceNetwork in R. For example, Blue for the weight of links more than 1, dark for the weight of links less than 1.

示例代码，复制自此处（ forceNetwork section）：

Example code, copied from here (the forceNetwork section):

library(networkD3)
# Load data
data(MisLinks)
data(MisNodes)

# Plot
forceNetwork(Links = MisLinks, Nodes = MisNodes,
        Source = "source", Target = "target",
        Value = "value", NodeID = "name",
        Group = "group", opacity = 0.8)

与d3-js相关的问题是这里（到目前为止我对JS一无所知）。

A d3-js related question is here (I know nothing about JS so far).

推荐答案

我在使用 networkD3 时遇到了同样的问题。

你可以通过提供一个向量来实现这一点，具体取决于值 MisLinks $ value 使用 ifelse 函数：

I've just had the same problem working with networkD3.
You can do that by providing a vector depending on the values of MisLinks$value using the ifelse function:

forceNetwork(Links = MisLinks, Nodes = MisNodes,
         Source = "source", Target = "target",
         Value = "value", NodeID = "name",
         Group = "group", opacity = 0.8,
         linkColour = ifelse(MisLinks$value > 1, "blue","black"))

此解决方案不依赖于知道 javascript 。

希望这会有所帮助。

This solution does not depend on knowing javascript.
Hope this helps.

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