[Gretl-users] Simple variable generation question

Hi, I have car data that I imported from excel. The first column of the excel worksheet has a car designation label: econ or prestige. The first 40 observations are econ cars and the next 40 are prestige cars. In Gretl, the designation appears as a row label. I'd like to subset the data to model the econ cars. I tried to create a dummy variable, seg, as seg = (obs == "econ") but that only sets the first observation to 1 and the rest to 0. I need all 40 econ cars to have seg = 1 and the 40 prestige cars to have seg = 0. How can I do this? Thanks, Walt ________________________ Walter R. Paczkowski, Ph.D. Data Analytics Corp. 44 Hamilton Lane Plainsboro, NJ 08536 ________________________ (V) 609-936-8999 (F) 609-936-3733 walt(a)dataanalyticscorp.com www.dataanalyticscorp.com _____________________________________________________