Name

findcoef — find coefficients in an equation

CALLING SEQUENCE

[coef]=findcoef(str,car)

PARAMETERS

Input

• str = the equation analyzed

• car = the default car for the beginning of the coefficients

Output

• coef = the names of the coefficients

DESCRIPTION

In an equation where the coefficients are given by default (car1,…,carn) finds the last coefficient in this equation and infer the names of the coefficients

EXAMPLE


findcoef('a1+a2*x1+(a3-a2)*x2+(a4-a3)*a5b','a')
//returns ['a1';'a2';'a3';'a4']. The main usage is in econometric functions where the user must give the text of an equation (nls, twosls, threesls,…). 



               

AUTHOR

Eric Dubois 2002