r语言网络图 r语言网络图绘图代码

如何用r计算网络图node betweenness

Cb(n) = ∑s≠n≠t (σst (n) / σst), where s and t are nodes in the network different from n, σst denotes the number of shortest paths from s to t, and σst (n) is the number of shortest paths from s to t that n lies on. Betweenness centrality is computed only for networks that do not contain multiple edges. The betweenness value for each node n is normalized by dividing by the number of node pairs excluding n: (N-1)(N-2)/2, where N is the total number of nodes in the connected component to which n belongs. Thus, the betweenness centrality of each node is a number between 0 and 1. For example, the betweenness centrality of node b in Figure7 is computed as follows: Cb(b) = ((σac(b) / σac) + (σad(b) / σad) + (σae(b) / σae) + (σcd(b) / σcd) + (σce(b) / σce) + (σde(b) / σde)) / 6 = ((1 / 1) + (1 / 1) + (2 / 2) + (1 / 2) + 0 + 0) / 6 = 3.5 / 6 ≈ 0.583

r语言如何把柱状图和线图结合

1

电脑打开表格，选择单元格，再点击“插入”。

2

在插入选项，点击“全部图表”。

3

在全部图表，点击“组合图”。

4

由于本篇使用的是WPS，所以部分图表是收费的，所以可以先点击“免费”，再点击“折线柱状图”。

5

表格插入柱状图后，如果没有显示折线，可以点击旁边的图标元素按钮。

6

出现下拉选项，点击“趋势线”，再点击“更多选项”。

7

在更多选项，点击“多项式”，就可以看到已经制作柱状图和折线图组合了。

如何用R语言画标准正太分布图，并标明P(u<0.4)

curve(pnorm(x), -3, 3, main="P(u < 0.4)")abline(v=0.4, col = 2)第一句画正态分布图,第二句画根儿线,表明0.4的位置