Fields from other Survo data sets can be used as input information
in VAR transformations. Other data sets to be employed in VAR must be
given as a specification
INDATA=<data_1>,<data_2>,...
where <data_1>,<data_2>,... are Survo data sets of any type. Number of
them is limited to 12.
A field in <data_i> is denoted by Di:<fieldname>, i=1,2,...
Also lags and leads can be indicated in brackets [].
Example:
VAR Change=Price-D1:Price TO DAT87 / INDATA=DAT86
computes 'Change' to data DAT87 as a difference of 'Price' in DAT87
and DAT86.
M = Matrix files in VAR operation
V = More information on VAR operation