Dear Statalist,

I am using Stata 15. and I am working on spatial (SAR) model with panel data. I have difficulties:

1. I can not linked the shape file --> I have the coordinates (lat and long) so I chose estimation without shapefile.
2. When I type : spmatrix create idistance W, it says: Two or more observations have the same coordinates. Of course the banks will have exactly same coordinates each time observations. What should I do?
3. When I remove the bank with some coordinates (that is meaan the data become cross section) it says:
spxtregress ROA SIZE CAPITAL, fe dvarlag(W)
(45 observations)
(45 observations used)
(data contain 45 panels (places) )
data contain fewer than 2 time periods
r(459);

Any advise is much appreciated. Thank you