On Mon, 14 Sep 2020, Daniel Ventosa-Santaulària wrote:
Last week I was working with a weekly data set of my own. I tried to
include a dummy variable (to model a break) and found that the instruction
in Gretl was not working properly; the dummy variable is created, but
filled only with zeros; no "ones" are included after a precise date. At
first I thought it was a problem with my data, but then I tried with a
sample file and the problem persists. I am using gretl 2020d. Below I
provide an example code to show what the problem is:
series Dummy = obs>=1995-02-22 && obs<=2006-07-27
series Dummy2 = obs>=1995-02-22
gnuplot Dummy Dummy2 --time-series --output="display"
You need to quote those dates to make this work:
series Dummy = obs>="1995-02-22" && obs<="2006-07-27"
series Dummy2 = obs>="1995-02-22"
Otherwise gretl tries to parse them as integer values.