最近的 rdrobust 版本 1.0.1 应该处理这个错误.从分类变量状态"产生固定效应您可以执行以下操作:

The recent rdrobust version 1.0.1 should take care of this error. To generate fixed effects from a categorical variable "state" you can do something like:

state.f = factor(state)

state.d = model.matrix(~state.f+0)

out = rdrobust(y, x, covs = state.d)