PSPP-BUG: Logistic Regression bugs

[Renan Levine]

Dear PSPP users and programmers,

Thank you for your hard work in developing new capabilities for PSPP. I'm using the most recent version of PSPP, psppire.exe 0.7.9-gaef7f5

I recently encountered some problems while running logistic regressions:

1) There appears to be a bug in the logistic regression routine that causes it to recognize missing values in the dependent variable as a value category. So, even when a variable is coded 0, 1 and [system] missing (common in public opinion data), PSPP gives an error message: "Dependent variable's values are not dichotomous."

I've run logit analyses on three different .por and one .sav datasets, tried to see if user-missing is treated differently than system-missing, and if declaring missing values works any differently than a recode statement. The only way I manage to run a logistic regression is if I recode the dependent variable to be two integers with no missing values.

2) Less critically, I'm not sure the syntax /CATEGORICAL=var is working correctly. When I include that line, letting the computer know that an independent variable is dichotomous, I get an error message: .3-13: error: Syntax error at 'categorical'. HOWEVER, just including the variable on the initial line with the other independent variables seems to work (I can't be certain because I did not cross-reference my results with another statistics program).

Yours,
Renan

On 12-Nov-12 2:08 PM, John Darrington wrote:

On Mon, Nov 12, 2012 at 05:25:52PM +0000, Gregory Jonason wrote:
     Helo. I am *VERY* new to PSPP. I was wondering how to go about
     installing more of the Analysis functions available in PSPP?
     
Install  a more recent version.

Recent versions include K-Means Clustering, GLM and Logistic Regression.
Note however, that not all the features of pspp have gui menus.  Refer
to the documentation which accompanies the install for a list of what's
implemented and what is not.

J'

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-- 
Renan Levine
Department of Political Science
University of Toronto - Scarborough
address@hidden
http://individual.utoronto.ca/renan
(416) 208-2651

-- 
Renan Levine
Department of Political Science
University of Toronto - Scarborough
address@hidden
http://individual.utoronto.ca/renan
(416) 208-2651

-- 
Renan Levine
Department of Political Science
University of Toronto - Scarborough
address@hidden
http://individual.utoronto.ca/renan
(416) 208-2651