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
-
- 8 Replies
- 5451 Views
-
Last post by dpalma
-
- 1 Replies
- 1075 Views
-
Last post by stephanehess
-
- 1 Replies
- 1001 Views
-
Last post by stephanehess
-
- 5 Replies
- 36268 Views
-
Last post by dpalma
-
- 1 Replies
- 27465 Views
-
Last post by stephanehess
-
- 1 Replies
- 7073 Views
-
Last post by stephanehess
-
- 2 Replies
- 7079 Views
-
Last post by lemontree
-
- 2 Replies
- 6555 Views
-
Last post by sykim
-
- 8 Replies
- 21089 Views
-
Last post by lxiaolei
-
- 11 Replies
- 118019 Views
-
Last post by stephanehess
-
- 7 Replies
- 7406 Views
-
Last post by zx9203
-
- 2 Replies
- 7053 Views
-
Last post by Pigouvian
-
- 5 Replies
- 6284 Views
-
Last post by stephanehess
-
- 5 Replies
- 6548 Views
-
Last post by stephanehess
-
- 13 Replies
- 28748 Views
-
Last post by stephanehess
-
- 1 Replies
- 4396 Views
-
Last post by stephanehess
-
- 1 Replies
- 2706 Views
-
Last post by stephanehess
-
- 2 Replies
- 13975 Views
-
Last post by janikm
-
- 11 Replies
- 6193 Views
-
Last post by qcng
-
- 9 Replies
- 58099 Views
-
Last post by dpalma
-
- 10 Replies
- 15113 Views
-
Last post by DavideContu
-
- 18 Replies
- 6606 Views
-
Last post by stephanehess
-
- 1 Replies
- 2875 Views
-
Last post by stephanehess
-
- 10 Replies
- 5946 Views
-
Last post by stephanehess
-
- 2 Replies
- 3027 Views
-
Last post by stephanehess