xtdpdsys lnw ait ait2 dum1 dum2 ,lags(1)

我换了几种编写方法了，一直是这个问题，请问你知道怎么解决吗？

没有数据，没有真相

该数据是一个非均衡个人收入面板数据，一共有84期，每个月1期，d变量为月份变量，age为年龄，sex为性别，还有户籍和工作部分两个dummy。大概情况就是这样。

The Mata system parameter matafavor influences the behavior of the Mata version of xtabond2.  Type mata: mata set matafavor speed or mata: mata set matafavor space
        before running xtabond2 to influence the tradeoff it makes between speed and memory use.  Add the , perm option to these commands to make the change permanent.
        Note:  Increasing the amount of memory available for Stata data sets using the set memory command reduces that available to Mata.  So if Mata xtabond2 is running out
        of memory, usually indicated by an unable to allocate real message, also try reducing Stata memory with set memory.