spatwmat using  "D:\Program Files (x86)\Stata\Michele\w\z\china_spatdwm\P_W2(300).dta",name(P_W2)
spmatrix normalize "D:\Program Files (x86)\Stata\Michele\w\z\china_spatdwm\P_W2(300).dta" , normalize(row)
我想用spmatrix normalize命令把spatwmat生成的矩阵P_W2标准化，可是结果显示weighting matrix P_W2 not found
想请教各位问题出在哪里了，谢谢