Hot Spot Analysis utilizes the GetisOrd Gi or Gi* statistics. These are local indicators of spatial association. In this video we break down what a LISA is and how the Gi / Gi* statistics are derived from the Global G.

In this video we illustrate how we can calculate the Gi using the R programming language with the packages sfdep and dplyr.

Local Indicators of Spatial Association LISA: https://onlinelibrary.wiley.com/doi/1...
Blog on Conditional Permution: https://josiahparry.com/posts/csr.html
sfdep: https://sfdep.josiahparry.com/

0:00 intro
0:15 local indicators
1:15 GetisOrd G
1:45 Local G (Gi)
2:50 Example
3:20 Gi numerator
3:34 Gi denominator
5:35 Gi vs Gi*
7:00 Gi interpretation
7:35 Simulated pvalues
8:04 Hypotheses
8:47 Live coding