生成经济权重举证时出现:有一行元素都为0,不能标准化,是什么情况?
. spwmatrix gecon latitude longitude, wn(wfj) wt(econ) econvar( avegdp ) noisla
> nd rowstand
N.B.: Elements of one row of the weights matrix sum up to zero; weights matrix
> was not row-standardized
This row is:
14
You might want to rethink your weights structure criteria.
An alternative is to specify the noisland option to generate the spatial weight
> s without the island observation:
Economic distance spatial weights matrix (30 x 30) calculated successfully and
> the following action(s) taken:
- Spatial weights matrix created as Stata object(s): wfj.



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