用的stata14版本,在Wald检验前运行一下xsmle lnco2qd lngdp lnrkmd lnjsjb lnfdi lncyjg lnczhl lnwmycd, fe wmat(W) model(sdm) type(both) nolog<br>
Wald: testnl ([Wx]lngdp=-[Spatial]rho*[Main]lngdp)([Wx]lnrkmd=-[spatial]rho*[Main]lnrkmd)([Wx]lnjsjb=-[spatial]rho*[Main]lnjsjb)([Wx]lnfdi=-[spatial]rho*[Main]lnfdi)([Wx]lncyjg=-[spatial]rho*[Main]lncyjg)([Wx]lnczhl=-[spatial]rho*[Main]lnczhl)([Wx]lnwmycd=-[spatial]rho*[Main]lnwmycd)<br>
结果出现:equation [spatial] not found<br>
想问一下这个怎么解决,希望知道的大神们给予解决方案,谢谢啦