spdep 1.2-8 added warnings to require some arguments in mat2listw().
converged: relative convergence (4)
Warning messages:
1: In spdep::mat2listw(abs(Q), style = "M") :
style is M (missing); style should be set to a valid value
2: In spdep::mat2listw(abs(Q), style = "M") :
no-neighbour observations found, set zero.policy to TRUE;
this warning will soon become an error
spdep 1.2-8
added warnings to require some arguments inmat2listw()
.