How to combine MCMC diagnostic plots from two (or more) ERGM estimation in one figure as in the example below?
library(ergm)
library(latticeExtra)
data(florentine)
# Fit two ERGM models
model1 <- ergm(flomarriage ~ edges + kstar(2))
model2 <- ergm(flomarriage ~ edges + kstar(2) + triangle)
mcmc.diagnostic(model1)
mcmc.diagnostic(model2)
Obviously you can "glue" together the plots in some image-editting program. To do it in R you'll need to use coda (used by ergm internally anyway) and some lattice gymnastics, for example:
p1 <- model1$sample |>
coda::as.mcmc.list() |>
ergm_plot.mcmc.list(main = "Model 1")
p2 <- model2$sample |>
coda::as.mcmc.list() |>
ergm_plot.mcmc.list(main = "Model 2")
plot(p1, split=c(1,1,2,1) )
plot(p2, split=c(2,1,2,1), newpage = FALSE)