Hi Stephane,
Thanks for your prompt reply. I was able to solve the issue simply by upgrading apollo version as suggested by one of my colleagues.
Best,
Eeshan
Important: Read this before posting to this forum
- This forum is for questions related to the use of Apollo. We will answer some general choice modelling questions too, where appropriate, and time permitting. We cannot answer questions about how to estimate choice models with other software packages.
- There is a very detailed manual for Apollo available at http://www.ApolloChoiceModelling.com/manual.html. This contains detailed descriptions of the various Apollo functions, and numerous examples are available at http://www.ApolloChoiceModelling.com/examples.html. In addition, help files are available for all functions, using e.g. ?apollo_mnl
- Before asking a question on the forum, users are kindly requested to follow these steps:
- Check that the same issue has not already been addressed in the forum - there is a search tool.
- Ensure that the correct syntax has been used. For any function, detailed instructions are available directly in Apollo, e.g. by using ?apollo_mnl for apollo_mnl
- Check the frequently asked questions section on the Apollo website, which discusses some common issues/failures. Please see http://www.apollochoicemodelling.com/faq.html
- Make sure that R is using the latest official release of Apollo.
- Users can check which version they are running by entering packageVersion("apollo").
- Then check what is the latest full release (not development version) at http://www.ApolloChoiceModelling.com/code.html.
- To update to the latest official version, just enter install.packages("apollo"). To update to a development version, download the appropriate binary file from http://www.ApolloChoiceModelling.com/code.html, and install the package from file
- If the above steps do not resolve the issue, then users should follow these steps when posting a question:
- provide full details on the issue, including the entire code and output, including any error messages
- posts will not immediately appear on the forum, but will be checked by a moderator first. This may take a day or two at busy times. There is no need to submit the post multiple times.
Search found 3 matches
- 27 Feb 2021, 07:36
- Forum: Model specification
- Topic: MDCNEV model with RP-SP data
- Replies: 2
- Views: 4456
- 26 Feb 2021, 06:20
- Forum: Model specification
- Topic: MDCNEV model with RP-SP data
- Replies: 2
- Views: 4456
MDCNEV model with RP-SP data
Hi, Is it possible in apollo to jointly estimate RP-SP data for MDCNEV model? I have successfully used apollo example_22 to do it for a nested logit model with discrete choice but not able to do it for MDCNEV. The error message: Error in apollo_mdcnev(mdcnev_settings, functionality = "estimate&...
- 03 Dec 2020, 12:38
- Forum: Model estimation
- Topic: Problem with estimation of MDCNEV model
- Replies: 1
- Views: 5862
Problem with estimation of MDCNEV model
I am currently working on an MDCNEV model but keep on getting the error message which reads - Error in if (all(testL == 0)) stop("\nAll observations have zero probability at starting value for model component \"", : missing value where TRUE/FALSE needed Traceback--- 3. apollo_mdcnev(m...