NonlinearRegress problem

*To*: mathgroup at smc.vnet.net*Subject*: [mg75847] NonlinearRegress problem*From*: Fulya "Baðcý" <fulya_bagci at yahoo.com>*Date*: Fri, 11 May 2007 06:31:52 -0400 (EDT)

Hello everyone, I'm trying to fit data with the function and find two unknown parameters. I readlist the data from a text file.My data is as {Number,Number},{Number,Number},...I want to divide the first Number s to 10 and list again.What command do I have to use?Secondly, I use NonlinearRegress and it gives such an error: "The data argument of NonlinearRegress must be a matrix. Weighted regression is specified using the Weights option. The data format {{x11, x12, ..., {y11, ..., y1m}}, {x21, x22, ..., {y21, ..., y2m}}, ..., {{xn1, xn2, ..., {yn1, ..., ynm}}} is reserved for multiple response data, which will be supported in the future." What can I do to correct this error? Thank you very much. Fulya