刚学会STATA，惭愧！我的command是这样的

xmluse "C:\Documents and Settings\Lyun\Desktop\ Assignment\data.xml", doctype(excel) sheet(data)

结果：

no room to add more variables due to width
    An attempt was made to add a variable that would have increased the memory required to store an
    observation beyond what is currently possible.  You have the following alternatives:

     1.  Store existing variables more efficiently; see help compress.

     2.  Drop some variables or observations; see help drop.  (Think of Stata's data area as the area of a
         rectangle; Stata can trade off width and length.)

     3.  Increase the amount of memory allocated to the data area using the set memory command; see help
         memory.
根据warning我试了几次都没办法。怎么回事啊？(我是个很新的新手，计算机程序方面实在是汗一个。别扔我板砖啊）

谢谢指点！