在进行ERGM回归后,想要绘制拟合优度图,怎么总是报错?
model <- ergm(net ~ edges + edgecov(dist)+ nodecov("gdp") + nodecov("pgdp"))gof <- gof(model)> plot(gof)Error in eval(predvars, data, env) : 找不到对象'idegree'此外: Warning message:In plot.gof(gof(model)) : Too many gof objects for tiling. Switching off 'mfrow'.