This is documentation for Mathematica 6, which was
based on an earlier version of the Wolfram Language.
 Linear Regression Package Symbol

# DesignMatrix

 DesignMatrix[data, funs, vars]gives the design matrix for data as a linear combination of the functions funs of the variables vars.
• The ith row of a design matrix contains the values of the basis functions funs evaluated at the values for the ith element in data.
• The data can have the form {{x1, y1, ..., f1}, {x2, y2, ..., f2}, ...}, where the number of coordinates x, y, ... is equal to the number of variables in the list vars.
• The data can also be of the form {f1, f2, ...}, with a single coordinate assumed to take values 1, 2, ....
• The argument funs can be any list of functions that depend only on the variables vars.
• The following option can be given:
 IncludeConstant True whether to automatically include a constant as one of the functions
• With the default setting , the constant 1 is included as the first entry in the list of basis functions if a constant is not included in funs.
Needs["LinearRegression`"]
Design matrix for a straight line:
 Out[2]=

Needs["LinearRegression`"]
Design matrix for a quadratic curve:
 Out[2]=
 Options   (1)