[18710] in s-news-athena
[S] nls( ) singular gradient matrix
daemon@ATHENA.MIT.EDU (E. Conrad Lamon III)
Thu Jul 22 14:28:54 1999
Message-Id: <9907221823.AA66157@unix1.sncc.lsu.edu>
From: "E. Conrad Lamon III" <eclamon@unix1.sncc.lsu.edu>
To: <S-news@wubios.wustl.edu>
Date: Thu, 22 Jul 1999 13:24:35 -0500
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While trying to fit a nonlinear model using nls( ), I get an error message
that says I have a singular gradient matrix. I am not sure what causes
this problem. Should I try different initial values of the parameters, or
is the problem something else?
Cheers
Conrad
Dr. E. Conrad Lamon III
Asst. Prof. of Environmental Planning and Management
Louisiana State University - Institute for Environmental Studies
42 Atkinson Hall
Baton Rouge, LA 70803
PHONE: 225-388-8519
FAX: 225-388-4286
WEB: http://www.leeric.lsu.edu/ies/faculty.htm
EMAIL ADDRESS: eclamon@unix1.sncc.lsu.edu
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