Hi,
reproducible example of the error I'm getting when I try to specify the
month elements with single digits in the panel context (only):
<hansl>
# plain monthly time series for comparison
open hamilton
smpl 1975:1 1980:6 # works with single-digit month numbers
# artificial monthly panel
T = 24
N = 10
TN = T*N
pd = 12
nulldata TN --preserve
setobs T 1:1 --stacked-time
setobs pd 2000:1 --panel-time
smpl 2000:02 2001:01 --time # works with double-digit month numbers
smpl full
smpl 2000:3 2001:5 --time # fails with single-digit month numbers
</hansl>
This is gretl 2025b.
thanks
sven