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andybega/us48-spatial-lag.R

Last active August 7, 2019 17:09
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Fraction of neighboring US states with a policy
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us48-spatial-lag.R
library("splm")
data("usaww")
?usaww
# Only Alabama has this policy
policy_x <- c(1, rep(0, 47))
names(policy_x) <- rownames(usaww)
head(policy_x)
# Fraction of neighboring states with policy x
usaww %*% policy_x
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