When using spmat, there are many regions without neighbors...

[seong suk Tak]

I used the spmat code to create a spatial weighting based on contiguity.

Here is the code I wrote.

spmat contiguity weight using SIG_xy, id("_ID") tolerance(0.09)

But I got 43 regions with no contiguity.
This is too high, even though I used 'tolerance' to allow for error.
I increased the tolerance to 500 and got the same result.

I need to use the spmat code and analyze based on contiguity unconditionally.

I would appreciate
if you could tell me in the code what more options I can add to reduce the non-contiguous regions here.

[seong suk Tak]

Any help would be greatly appreciated.