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
-
- 2 Replies
- 38622 Views
-
Last post by Laure K
-
- 2 Replies
- 8337 Views
-
Last post by usman.ahmed
-
- 1 Replies
- 8069 Views
-
Last post by dpalma
-
- 16 Replies
- 92835 Views
-
Last post by stephanehess
-
- 5 Replies
- 18071 Views
-
Last post by stephanehess
-
- 15 Replies
- 71737 Views
-
Last post by stephanehess
-
- 3 Replies
- 15492 Views
-
Last post by stephanehess
-
- 4 Replies
- 29528 Views
-
Last post by hrrichard
-
- 1 Replies
- 6873 Views
-
Last post by stephanehess
-
- 5 Replies
- 39633 Views
-
Last post by stephanehess
-
- 4 Replies
- 21157 Views
-
Last post by dpalma
-
- 1 Replies
- 8281 Views
-
Last post by dpalma
-
- 4 Replies
- 40263 Views
-
Last post by cybey
-
- 1 Replies
- 10796 Views
-
Last post by stephanehess
-
- 2 Replies
- 66817 Views
-
Last post by saeed.shakib
-
- 3 Replies
- 28779 Views
-
Last post by stephanehess
-
- 6 Replies
- 26878 Views
-
Last post by stephanehess
-
- 6 Replies
- 38841 Views
-
Last post by LydiaYang
-
- 7 Replies
- 18050 Views
-
Last post by anhntl
-
- 1 Replies
- 7182 Views
-
Last post by stephanehess
-
- 4 Replies
- 13227 Views
-
Last post by arohamirai
-
- 6 Replies
- 63772 Views
-
Last post by Thomas
-
- 3 Replies
- 32523 Views
-
Last post by dpalma
-
- 1 Replies
- 7284 Views
-
Last post by dpalma
-
- 3 Replies
- 20090 Views
-
Last post by stephanehess