the lincomb function does not produce correct resultes when applied in the way presented below namely in a panel with autoregressive calculation:

<hansl>

open abdata.gdt

# correct variant
smpl full
series CAP_test = CAP
smpl YEAR>=1980 && YEAR<1984 --res --rep --bal
series CAP_test = 0.5*CAP_test(-1)
print -o CAP CAP_test
series CAP_test_correct = CAP_test

# efficient variant
smpl full
series CAP_test = CAP
smpl YEAR>=1980 && YEAR<1984 --res --rep --bal
list xList = CAP_test(-1)
matrix coeffs = {0.5}
series CAP_test = lincomb(xList,coeffs)
print -o CAP_test_correct CAP_test # different results from t+2 on

<hansl>

Best

Leon