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.
Errors during model validation and/or estimation.
-
- Topics
- Replies
- Views
- Last post
-
- 18 Replies
- 7439 Views
-
Last post by stephanehess
-
- 1 Replies
- 3260 Views
-
Last post by stephanehess
-
- 10 Replies
- 6679 Views
-
Last post by stephanehess
-
- 2 Replies
- 3461 Views
-
Last post by stephanehess
-
- 6 Replies
- 3804 Views
-
Last post by catalinaposadab
-
- 6 Replies
- 3823 Views
-
Last post by qcng
-
- 9 Replies
- 3933 Views
-
Last post by stephanehess
-
- 9 Replies
- 3425 Views
-
Last post by ramkumar
-
- 2 Replies
- 2461 Views
-
Last post by alemitrani
-
- 5 Replies
- 4675 Views
-
Last post by Nishihara
-
- 6 Replies
- 4737 Views
-
Last post by dpalma
-
- 9 Replies
- 1274 Views
-
Last post by stephanehess
-
- 9 Replies
- 2004 Views
-
Last post by stephanehess
-
- 6 Replies
- 2973 Views
-
Last post by stephanehess
-
- 1 Replies
- 2018 Views
-
Last post by stephanehess
-
- 4 Replies
- 1456 Views
-
Last post by Aditya249
-
- 5 Replies
- 1699 Views
-
Last post by stephanehess
-
- 3 Replies
- 1173 Views
-
Last post by stephanehess
-
- 3 Replies
- 1246 Views
-
Last post by stephanehess
-
- 6 Replies
- 3645 Views
-
Last post by Shan
-
- 7 Replies
- 2771 Views
-
Last post by stephanehess
-
- 1 Replies
- 1055 Views
-
Last post by stephanehess
-
- 3 Replies
- 1505 Views
-
Last post by stephanehess
-
- 3 Replies
- 1405 Views
-
Last post by stephanehess
-
- 2 Replies
- 2233 Views
-
Last post by Miller Cooker