你猜~~~ 发表于 2012-8-6 12:46 
请问为啥用missover的时候,最后一个观察量是最后一个变量缺失值,但用dsd的时候却是第一个观察两缺失值了 ...
The DSD option can also be used to read raw data when there is a missing value at the
beginning of a record, as long as a delimiter precedes the first value in the record