Deprecated for networks without self-loops. Use nodeicov-ergmTerm, nodeifactor-ergmTerm, nodecov-ergmTerm or nodefactor-ergmTerm instead.
If the attribute is numeric, this term adds one covariate to the model equaling attrname(i). If the attribute is not numeric or force.factor==TRUE, this term adds p−1
covariates to the model, where p is the number of unique values of attrname. The kth such covariate has the value attrname(i) == value(k+1), where value(k) is the kth smallest unique value of the attrname
attribute. This term only makes sense if the network is directed.
Important: This term works in list("latentnet")'s ergmm() only. Using it in ergm() will result in an error.