ExportVariable
Use this command to export the values of variables to an external text file.
Caution: The names of variables in Longview Application Framework to be used in data event triggers are limited to 10 characters. The convention is E_DIMNAME (where DIMNAME is the first 8 characters of the dimension name). In the case where the first 8 characters of the dimension names are the same, the variables are named E_DIMNAME_N (where DIMNAME is the first 6 characters of the dimension, and N is the dimension number).
Syntax:
EXPORTVARIABLE VariableName FileName [APPEND]
where:
VariableName is the name of a particular variable.
-
FileName is an ASCII file containing the data. It can include a complete or partial folder path in the format C:\...\FileName. If FileName includes spaces, enclose it in double quotation marks;
for example: @"C:\My Documents\My Data.txt"
Note: If the document is in the same location as lv_af.exe, you do not need to specify the drive or path. If the path specified does not exist, it will be created. The folder path can have a maximum length of 260 characters.
APPEND directs the command to place the variable’s value in a new line of an existing text file.
If the named text file does not exist, it is automatically created, even if APPEND is part of the command.
Caution: If the named text file already exists and APPEND is not designated, the existing text file will be overwritten and any data stored in it will be lost.
Syntax example:
CREATE VARIABLE X AS STRING
CREATE VARIABLE Y AS NUM
SET VARIABLE X = "YEAR"
SET VARIABLE Y = 2007
EXPORTVARIABLE X Variables.txt
EXPORTVARIABLE Y Variables.txt APPEND
See also