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
-
- 5 Replies
- 1846 Views
-
Last post by stephanehess
-
- 1 Replies
- 777 Views
-
Last post by stephanehess
-
- 1 Replies
- 508 Views
-
Last post by stephanehess
-
- 9 Replies
- 14431 Views
-
Last post by janak12_jp
-
- 3 Replies
- 1519 Views
-
Last post by dpalma
-
- 3 Replies
- 2991 Views
-
Last post by stephanehess
-
- 6 Replies
- 2060 Views
-
Last post by stephanehess
-
- 3 Replies
- 3726 Views
-
Last post by stephanehess
-
- 3 Replies
- 1491 Views
-
Last post by stephanehess
-
- 6 Replies
- 5040 Views
-
Last post by stephanehess
-
- 1 Replies
- 827 Views
-
Last post by stephanehess
-
- 1 Replies
- 1050 Views
-
Last post by stephanehess
-
- 1 Replies
- 836 Views
-
Last post by stephanehess
-
- 1 Replies
- 2374 Views
-
Last post by stephanehess
-
- 1 Replies
- 2202 Views
-
Last post by dpalma
-
- 3 Replies
- 2964 Views
-
Last post by stephanehess
-
- 5 Replies
- 3300 Views
-
Last post by stephanehess
-
- 3 Replies
- 4236 Views
-
Last post by stephanehess
-
- 5 Replies
- 5124 Views
-
Last post by maxrudolf
-
- 12 Replies
- 21029 Views
-
Last post by stephanehess
-
- 9 Replies
- 5422 Views
-
Last post by stephanehess
-
- 3 Replies
- 2999 Views
-
Last post by stephanehess
-
- 13 Replies
- 128698 Views
-
Last post by stephanehess
-
- 1 Replies
- 2348 Views
-
Last post by stephanehess
-
- 1 Replies
- 2368 Views
-
Last post by stephanehess