Bulent

On Wed, Apr 4, 2012 at 11:47 PM, Allin Cottrell <cottrell@wfu.edu> wrote:

On Wed, 4 Apr 2012, Bulent Erdemir wrote:

> Indeed it works. Thank you very much.
>
> On the other, the documentation says that the format should be yyyy:mm for
> monthly date values on page 21 in User Guide.

If dates are given as strings, then yyyy:mm is a good format
for monthly data (though gretl will recognize a variety of
formats).

However, your dates are not strings, they are integers (which
represent calendar dates in Excel). If the left-most column is
reognized as being in a standard Excel date format, then the
date-integers will be processed correctly, but YYYY:MM is not
a standard Excel date format so the integers are read "raw",
in which case they don't make sense as dates.

Allin Cottrell

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