[R] Need help on Support. CEs

[朴美艳]

Hi,
I am a student from Korea. Currently I use Support. CEs package to conduct a choice-based conjoint analysis, but encounter some problems.I hope I can get a solution here.
Here's my problem.I 've done the design matrix data set, and have a respondent data set. But when I try to use the "make.design.matrix" function to creat a dataset that is suitable for the function clogit, there is always an error occur. The error is "Error in order(my.respondent.dataset$ID): argument 1 is not a vector".
I want to know why this error happens, and how to correct.
And the attached images are design matrix data set (desmat1p), respondent data set (persimmons1), and the code & error
I'll appreciate if you can reply as soon as possible.
best regards,
Mia.  		 	   		  
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