Hello!<br><br>I need to create some dummy variables in order to capture all the possible combinations of a certain set of variables.<br><br>For instance, let&#39;s assume I have three variables a, b, c.<br><br>I need one dummy equal to 1 when all three variables are positive, zero otherwise.<br>
I need one dummy equal to 1 when all three variables are negative, zero otherwise.<br>I need one dummy equal to 1 when a and b are positive and c negative, zero otherwise.<br>I need one dummy equal to 1 when a and c are positive and b negative, zero otherwise.<br>
Etc etc etc...<br><br>I would do this in Excel since my database is taken from a csv, but the actual number of variables is much higher then 3, so it takes a lot of time to do it manually.<br><br>I don&#39;t have any idea if it is possible to create these dummies automatically with some piece of code in GretL, but if it is I would really really appreciate your help in writing this code.<br>
<br>Thank you very much in advance.<br><br>Cheers,<br><br><br>Paolo<br>