“社交网络分析实验室”(斯坦福教程):对图形对象/网络类的混淆。

I apologize if this question seems redundant, but I am beginning to play around with R and its SNA tools for a class and have been running a couple of different tutorials/labs to get accustomed. A resource that always gets recommended are the SNA labs over at Stanford, but even just running the introductory lab returns a number of errors that leave me confused. The full R code with annotations is available here: I apologize if this question seems redundant, b