tlag.gs 的使用问题

concise

在使用tlag.gs，为何无法正确使用？渴望哪位大侠指点迷津！
操作如下：（sm2,sm4为两个变量，文件有720个时间步长，
z为1层）
ga-> set lon 110
LON set to 110.5 110.5
ga-> set lat 38
LAT set to 38.5 38.5
ga->
ga-> set t 100 200
Time values set: 1962:4:1:0 1970:8:1:0
ga->
ga-> tlag corr sm2 sm4 out -3 3
Open Error:  Data file type invalid
  --> The invalid description file record is:
  --> OPTIONS _cal
  The data file was not opened.
Unknown command: _resetx
Unknown command: _resety
Unknown command: _resetz
Data Request Error:  Invalid variable name
  Variable 'out.1' not found in file 1
Operation Error:  Error from tloop function
  Error ocurred at column 1
DEFINE error:  Invalid expression.
Unknown command: _resetx
Unknown command: _resety
Unknown command: _resetz
Unknown command: _resett
ga->