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
-
- 3 Replies
- 62 Views
-
Last post by stephanehess
-
- 11 Replies
- 11281 Views
-
Last post by stephanehess
-
- 12 Replies
- 15646 Views
-
Last post by stephanehess
-
- 5 Replies
- 228 Views
-
Last post by stephanehess
-
- 1 Replies
- 27 Views
-
Last post by stephanehess
-
- 8 Replies
- 5909 Views
-
Last post by dpalma
-
- 1 Replies
- 1307 Views
-
Last post by stephanehess
-
- 1 Replies
- 1177 Views
-
Last post by stephanehess
-
- 5 Replies
- 36798 Views
-
Last post by dpalma
-
- 1 Replies
- 27921 Views
-
Last post by stephanehess
-
- 1 Replies
- 7449 Views
-
Last post by stephanehess
-
- 2 Replies
- 7425 Views
-
Last post by lemontree
-
- 2 Replies
- 6868 Views
-
Last post by sykim
-
- 8 Replies
- 21539 Views
-
Last post by lxiaolei
-
- 11 Replies
- 118587 Views
-
Last post by stephanehess
-
- 7 Replies
- 7832 Views
-
Last post by zx9203
-
- 2 Replies
- 7385 Views
-
Last post by Pigouvian
-
- 5 Replies
- 6695 Views
-
Last post by stephanehess
-
- 5 Replies
- 6923 Views
-
Last post by stephanehess
-
- 13 Replies
- 29389 Views
-
Last post by stephanehess
-
- 1 Replies
- 4699 Views
-
Last post by stephanehess
-
- 1 Replies
- 2917 Views
-
Last post by stephanehess
-
- 2 Replies
- 14217 Views
-
Last post by janikm
-
- 11 Replies
- 6637 Views
-
Last post by qcng
-
- 9 Replies
- 58482 Views
-
Last post by dpalma