[R] Question of "Quantile Regression for Longitudinal Data"

[Helen Chen]

Hi, 

I am trying to estimate a quantile regression using panel data. I am trying
to use the model that is described in Dr. Koenker's article. So I use the
code the that is posted in the following link: 

http://www.econ.uiuc.edu/~roger/research/panel/rq.fit.panel.R

How to estimate the panel data quantile regression if the regression
contains no constant term? I tried to change the code of rq.fit.panel by
delect "X=cbind(1,x)" and would like to know is that correct ?


Thanks 
I really would appreciate some suggestions. 
Best 
Helen Chen
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