## ----include = FALSE----------------------------------------------------------
knitr::opts_chunk$set(collapse = TRUE, comment = "#>", fig.width = 7, fig.height = 4)

## ----data---------------------------------------------------------------------
library(slxr)
data(defense_burden_panel)

panel <- defense_burden_panel
dim(panel$data)
range(panel$data$year)
length(panel$W_contig)   # one W per year

## ----wrap---------------------------------------------------------------------
wrap_list <- function(W_list) {
  lapply(W_list, \(m) slx_weights(style = "custom",
                                  matrix = m,
                                  row_standardize = FALSE))
}

Wc <- wrap_list(panel$W_contig)    # year-varying contiguity
Wa <- wrap_list(panel$W_alliance)  # year-varying alliances
Wd <- wrap_list(panel$W_defense)   # year-varying defense pacts

## ----fit----------------------------------------------------------------------
fit <- slx(
  ch_milex ~ milex_tm1 + log_pop_tm1 + civilwar_tm1 + total_wars_tm1 +
             alliance_us + ch_milex_us + ch_milex_ussr,
  data    = panel$data,
  spatial = list(
    civilwar_tm1   = Wc,
    total_wars_tm1 = list(contig = Wc, alliance = Wa),
    milex_tm1      = list(contig = Wc, defense  = Wd)
  ),
  id   = "ccode",
  time = "year"
)

summary(fit)

## ----effects------------------------------------------------------------------
slx_effects(fit)

## ----plot, fig.height = 5-----------------------------------------------------
library(ggplot2)
slx_plot_effects(fit, types = c("indirect", "total"))