[Openspace] k-neighbors in GeoDA

[German Muchnik Izon]

Hi,

Does anyone know how GeoDA creates a weight matrix based 
on, for instance, 4 neighbors? Does it use distance to 
determine the closets four neighbors?
I imported a 4-neighbor weight matrix I created in GeoDA 
to R but when I check for symmetry, R tells me that the 
matrix is not symmetric. I did not have this problems with 
other weight matrices I created in GeoDA (i.e. euclidean, 
queen, rook)?
Also, when I create rook or queen continuity weight 
matrix, what is the meaning of "the order of continuity"?

Thank you!
German.