生成空间滞后项

是 否 +2 论坛币

k人 参与回答

经管之家送您一份

应届毕业生专属福利!

求职就业群

赵安豆老师微信：zhaoandou666

经管之家联合CDA

送您一个全额奖学金名额~ !

立即领取

感谢您参与论坛问题回答

经管之家送您两个论坛币！

+2 论坛币

splagvar命令选项挺多的，应该用哪个生成空间滞后项呢？有什么区别，在什么情况下用？

1.         splagvar  $y,  wname(weight)  wfrom(Stata)  order(1)   ind( $x)
   
2.         splagvar ,qvar($x ) qname($xsplag)

复制代码

扫码加我 拉你入群

请注明：姓名-公司-职位

以便审核进群资格，未注明则拒绝

分享0 收藏0 回帖

关键词：GVAR VaR PLA lag 滞后项

help文件是这么说的

   wname(weights_name) specifies the name of the spatial weights matrix to be used.

    wfrom(Stata | Mata) indicates whether the spatial weights matrix is a Stata matrix loaded in memory or a Mata file located in the working directory. If the spatial weights matrix had been created using spwmatrix it should exist as a Stata matrix or as a Mata file.

  
    qvar(varlist3) specifies the variables to be used in generating quasi-instrumental variables.

    qname(newvarlist) specifies a list of variable names for the generated quasi-intrumental variables coded 1, 0, and -1 depending on whether or not the values of the corresponding variables specified with qvar() are in the upper, middle or lower third of values when placed in rank order (see Fingle and Le Gallo, 2008).

https://www.statalist.org/forums ... 1510157#post1510157

https://www.statalist.org/forums/forum/general-stata-discussion/general/1567633-error-using-spgenerate?p=1572625#post1572625
参考Statalist帖子，关于生成空间滞后项的命令

你好，请问你解决了吗

UUYABC 发表于 2022-5-3 11:18
你好，请问你解决了吗

试试：

1. copy http://www.stata-press.com/data/r15/homicide_1960_1990.dta homicide_1960_1990.dta
   
2. copy http://www.stata-press.com/data/r15/homicide_1960_1990_shp.dta homicide_1960_1990_shp.dta
   
3. use homicide_1960_1990
   
4. xtset _ID year, delta(10)
   
5. spset
   
6. spmatrix create contiguity W if year == 1990
   
7. spgenerate Whrate = W*hrate if year == 1990
   
8. forv year = 1980(-10)1960 {
   
9.     spgenerate Whrate_temp = W*hrate if year == `year'
   
10.     replace Whrate = Whrate_temp if year == `year'
    
11.     drop Whrate_temp
    
12. }

复制代码