Dear Gretl community, I'm not a good "if-else" user so I need a little help. What's wrong with the following code? <hansl> open australia.gdt series E_hp = E - hpfilt(E, 1600) if E > E_hp series E_reg1 = E series PAUreg1 = PAU series PUSreg1 = PUS else series E_reg1 = NA series PAUreg1 = NA series PUSreg1 = NA endif <hansl> When I execute it I get the messages: "error evaluating 'if'" "Error executing script: halting".

I think the reason this fails is that the condition should result in a boolean scalar, whereas here it is a series of booleans. In this case you can use the ternary operator to set up a conditional assignment (see User Guide p. 140): <hansl> open australia.gdt series E_hp = E - hpfilt(E, 1600) series E_reg1= (E > E_hp) ? E : NA series PAUreg1 = (E > E_hp) ? PAU : NA series PUSreg1 = (E > E_hp) ? PUS : NA <hansl> HTH, Jan Annaert *UNIVERSITEIT**ANTWERPEN* | Faculty of Applied Economics (TEW) | Dept. Accounting & Finance Room S.B.335 | Prinsstraat 13 | B-2000 Antwerp | Belgium Phone +32 32654163 |Fax +32 32654064 https://www.uantwerp.be/en/staff/jan-annaert/ http://ssrn.com/author=143473 From: Henrique Andrade <henrique.coelho(a)gmail.com&gt; Reply-To: &quot;gretl-users(a)lists.wfu.edu&quot; <gretl-users(a)lists.wfu.edu&gt; Date: woensdag 25 maart 2015 17:15 To: &quot;gretl-users(a)lists.wfu.edu&quot; <gretl-users(a)lists.wfu.edu&gt; Subject: [Gretl-users] "If-Else" syntax help Dear Gretl community, I'm not a good "if-else" user so I need a little help. What's wrong with the following code? <hansl> open australia.gdt series E_hp = E - hpfilt(E, 1600) if E > E_hp series E_reg1 = E series PAUreg1 = PAU series PUSreg1 = PUS else series E_reg1 = NA series PAUreg1 = NA series PUSreg1 = NA endif <hansl> When I execute it I get the messages: "error evaluating 'if'" "Error executing script: halting". Best regards, Henrique Andrade _______________________________________________ Gretl-users mailing list Gretl-users(a)lists.wfu.edu http://lists.wfu.edu/mailman/listinfo/gretl-users