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  1. 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.
  2. 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
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    1. Check that the same issue has not already been addressed in the forum - there is a search tool.
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    3. Check the frequently asked questions section on the Apollo website, which discusses some common issues/failures. Please see http://www.apollochoicemodelling.com/faq.html
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  4. If the above steps do not resolve the issue, then users should follow these steps when posting a question:
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Search found 4 matches

by Nina
25 Oct 2021, 09:58
Forum: Model specification
Topic: MNL model with socio demographics
Replies: 8
Views: 21861

Re: MNL model with socio demographics

Thank you very much for your offer to view my data.
I just send you my data via email
by Nina
25 Oct 2021, 09:18
Forum: Model specification
Topic: MNL model with socio demographics
Replies: 8
Views: 21861

Re: MNL model with socio demographics

I get this error after > apollo_inputs <- apollo_validateInputs()

Error in do.call("cbind", lapply(x, "is.na")) :
variable names are limited to 10000 bytes

How can I solve this Error?

Best regards,
Nina
by Nina
25 Oct 2021, 09:07
Forum: Model specification
Topic: MNL model with socio demographics
Replies: 8
Views: 21861

Re: MNL model with socio demographics

Hi Stephan,

thank you very much for your quick response.
My entire code ist:

rm(list = ls())

library(data.table)
library(gsubfn)
library(tidyverse)

modelData <- fread("daten_erhebung.csv", na ="NA")
modelData <- data.table(modelData)
modelData <- modelData[ , .(lfdn,
PkwFahrer,
PkwMitfahrer ...
by Nina
25 Oct 2021, 08:23
Forum: Model specification
Topic: MNL model with socio demographics
Replies: 8
Views: 21861

MNL model with socio demographics

Hello,
I need help with the specification of my model. I would like to analyze my data by age groups, gender, income and area character (Gebietstyp). However, I need help to integrate them in the code. So far I have always received errors.

I already tried to integrate the age. Alter = age

Can you ...