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| From | Alberto Zaffaroni - 1338011 <alberto.zaffaroni@studbocconi.it> |
| To | statalist@hsphsun2.harvard.edu |
| Subject | st: DEA command in Stata, error message |
| Date | Wed, 31 Jul 2013 09:27:13 +0200 (CEST) |
Hello, I am a MSc student at Bocconi University. I am writing my Master thesis and in order to complete data analysis I need to run the DEA (Data Envelopment Analysis) command using a dataset of input and output measures that I created. I have the dea.ado file installed in the directory on which Stata operates and everything seems to be ready to work. Unfortunately, when I try to run the DEA command, this error message is the only result: lp_phase2(): 3498 No Solution at Stage 1 and Phase 2.:[DMUi=1] _dealp(): - function returned error <istmt>: - function returned error r(3498); Can anybody help me trying to understand what's going on and what's the problem, please? I have looked for solutions everywhere but could not find any. Thanks in advance for your kind attention. * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/faqs/resources/statalist-faq/ * http://www.ats.ucla.edu/stat/stata/