Creating spatial lag matrices in stata

[Rikuto Itani]

I want to create a spatial lag matrix in stata in order to do a spatial lag model. I am a beginner for econometric analysis.

Specifically, I want to create a spatial lag matrix for use in the SSA (Sub-Saharan Africa) country panel data.

Currently I have latitude and longitude information for the lag matrix.

I have found some methods on the internet, such as using Mata, but I did not understand them well.

. spgenerate W_x = W*xcntrd

but it displayed "data not spset".

[William Lisowski]

Have you read the introductory material in the Stata Spatial Autoregressive Models Reference Manual PDF included in your Stata installation and accessible from Stata's Help menu?