Hello,

I would like to estimate a logit with aggregated data. Each line 
describes an observation with the following fields :
- share of choice A
- share of choice B
- share of choice C
- Var.A1 (specific to choice A)
- Var.A2 (specific to choice A)
- Var.B1 (specific to choice B)
- Var.B2 (specific to choice B)
- Var.C1 (specific to choice C)
- Var.C2 (specific to choice C)

The sum of shares is equal to 1.

Var.A1 and Var.A2 are specific only for the choice A. These variables 
have no potential explanation of the choice B or C.

Is there any function to estime this LOGIT in R?

Thanks for any help.

Pierre-Olivier Chasset



             
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