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. We check the forum at least twice a week. It may thus take a couple of days for your post to appear and before we reply. There is no need to submit the post multiple times.
Errors during model validation and/or estimation.
-
- Topics
- Replies
- Views
- Last post
-
- 8 Replies
- 116309 Views
-
Last post by stephanehess
-
- 5 Replies
- 88609 Views
-
Last post by stephanehess
-
- 3 Replies
- 78557 Views
-
Last post by stephanehess
-
- 3 Replies
- 110388 Views
-
Last post by dpalma
-
- 2 Replies
- 107753 Views
-
Last post by mweir
-
- 4 Replies
- 100060 Views
-
Last post by stephanehess
-
- 2 Replies
- 48449 Views
-
Last post by Reinhard_BOKU
-
- 3 Replies
- 77094 Views
-
Last post by stephanehess
-
- 2 Replies
- 51525 Views
-
Last post by androdri
-
- 11 Replies
- 301617 Views
-
Last post by stephanehess
-
- 1 Replies
- 45171 Views
-
Last post by stephanehess
-
- 1 Replies
- 45684 Views
-
Last post by stephanehess
-
- 3 Replies
- 86862 Views
-
Last post by stephanehess
-
- 3 Replies
- 79477 Views
-
Last post by stephanehess
-
- 5 Replies
- 95628 Views
-
Last post by stephanehess
-
- 1 Replies
- 55830 Views
-
Last post by stephanehess
-
- 9 Replies
- 208158 Views
-
Last post by janak12_jp
-
- 3 Replies
- 60464 Views
-
Last post by dpalma
-
- 3 Replies
- 64523 Views
-
Last post by stephanehess
-
- 6 Replies
- 80251 Views
-
Last post by stephanehess
-
- 3 Replies
- 59329 Views
-
Last post by stephanehess
-
- 3 Replies
- 59845 Views
-
Last post by stephanehess
-
- 6 Replies
- 84550 Views
-
Last post by stephanehess
-
- 1 Replies
- 53258 Views
-
Last post by stephanehess
-
- 1 Replies
- 55572 Views
-
Last post by stephanehess