CAJ | 학술논문

选用MATLAB的Isqcurvefit、nlinfit、Isqnonlin,fminsearch、fminunc、fgoalattain、curvefit、nlintool等8个函数.分别拟合了van Genuchten方程参数,结果表明Isqcurvefit、nlinfit、curvefit和nlintool等4个函数拟合效果较好,具有源代码短、收敛性好等特点,特别是在实测数据较少的情况下,MATLAB的拟合结果甚至优于RETC和REDT.
선용MATLAB적Isqcurvefit、nlinfit、Isqnonlin,fminsearch、fminunc、fgoalattain、curvefit、nlintool등8개함수.분별의합료van Genuchten방정삼수,결과표명Isqcurvefit、nlinfit、curvefit화nlintool등4개함수의합효과교호,구유원대마단、수렴성호등특점,특별시재실측수거교소적정황하,MATLAB적의합결과심지우우RETC화REDT.
By using of the MATLAB software functions including lsqcurvefit, nlinfit, lsqnonlin, fminsearch, fminunc and fgoalattain, the van Genuchten equation parameters were fitted. The conclusions showed that the fitting effects of the MATLAB functions such as Isqcurvefit, nlinfit,curvefit and nlintonl were better, the program had small size and rapid convergence. Especially, the fitting effects of the MATLAB software functions were more excellent than RETC and REDT with fewer experimental data.