我想用数据拟合三元函数，但是不知道函数形式，貌似1stopt的自动搜索功能只能拟合二元的，请高手指点一下用1stopt怎么实现三元函数的拟合，以下是我的数据
ug Q' j P
5.8 11.06618281 5 1
5.8 11.06618281 10 5
5.8 11.06618281 15 7
5.8 11.06618281 20 26
5.8 11.06618281 25 33
5.8 11.06618281 30 21
5.8 11.06618281 35 5
5.8 11.06618281 40 2
5.8 11.06618281 45 1
6.82 12.6020868 5 3
6.82 12.6020868 10 7
6.82 12.6020868 15 10
6.82 12.6020868 20 23
6.82 12.6020868 25 26
6.82 12.6020868 30 17
6.82 12.6020868 35 7
6.82 12.6020868 40 4
6.82 12.6020868 45 3
7.63 13.03452075 5 4
7.63 13.03452075 10 8
7.63 13.03452075 15 12
7.63 13.03452075 20 15
7.63 13.03452075 25 17
7.63 13.03452075 30 21
7.63 13.03452075 35 12
7.63 13.03452075 40 5
7.63 13.03452075 45 3
7.63 13.03452075 50 2
7.63 13.03452075 55 1
8.58 13.05753565 5 4
8.58 13.05753565 10 9
8.58 13.05753565 15 11
8.58 13.05753565 20 15
8.58 13.05753565 25 16
8.58 13.05753565 30 21
8.58 13.05753565 35 15
8.58 13.05753565 40 3
8.58 13.05753565 45 3
8.58 13.05753565 50 2
8.58 13.05753565 55 1
9.42 12.28032813 5 4
9.42 12.28032813 10 11
9.42 12.28032813 15 11
9.42 12.28032813 20 14
9.42 12.28032813 25 16
9.42 12.28032813 30 17
9.42 12.28032813 35 15
9.42 12.28032813 40 5
9.42 12.28032813 45 3
9.42 12.28032813 50 2
9.42 12.28032813 55 1
9.42 12.28032813 60 1
5.8 12.12954898 5 2
5.8 12.12954898 10 9
5.8 12.12954898 15 13
5.8 12.12954898 20 23
5.8 12.12954898 25 26
5.8 12.12954898 30 16
5.8 12.12954898 35 5
5.8 12.12954898 40 3
5.8 12.12954898 45 1
6.82 13.49005478 5 5
6.82 13.49005478 10 12
6.82 13.49005478 15 12
6.82 13.49005478 20 16
6.82 13.49005478 25 17
6.82 13.49005478 30 19
6.82 13.49005478 35 11
6.82 13.49005478 40 3
6.82 13.49005478 45 2
6.82 13.49005478 50 2
6.82 13.49005478 55 1
7.63 13.9788715 5 4
7.63 13.9788715 10 10
7.63 13.9788715 15 13
7.63 13.9788715 20 15
7.63 13.9788715 25 15
7.63 13.9788715 30 19
7.63 13.9788715 35 12
7.63 13.9788715 40 5
7.63 13.9788715 45 3
7.63 13.9788715 50 3
7.63 13.9788715 55 1
8.58 13.63059494 5 3
8.58 13.63059494 10 9
8.58 13.63059494 15 12
8.58 13.63059494 20 16
8.58 13.63059494 25 15
8.58 13.63059494 30 20
8.58 13.63059494 35 16
8.58 13.63059494 40 3
8.58 13.63059494 45 2
8.58 13.63059494 50 2
8.58 13.63059494 55 1
8.58 13.63059494 60 1
9.42 12.6185563 5 4
9.42 12.6185563 10 11
9.42 12.6185563 15 11
9.42 12.6185563 20 12
9.42 12.6185563 25 16
9.42 12.6185563 30 17
9.42 12.6185563 35 15
9.42 12.6185563 40 7
9.42 12.6185563 45 3
9.42 12.6185563 50 2
9.42 12.6185563 55 1
9.42 12.6185563 60 1
5.8 12.96491415 5 4
5.8 12.96491415 10 10
5.8 12.96491415 15 14
5.8 12.96491415 20 19
5.8 12.96491415 25 23
5.8 12.96491415 30 15
5.8 12.96491415 35 5
5.8 12.96491415 40 4
5.8 12.96491415 45 3
5.8 12.96491415 50 2
5.8 12.96491415 55 1
6.82 14.22780982 5 6
6.82 14.22780982 10 12
6.82 14.22780982 15 13
6.82 14.22780982 20 13
6.82 14.22780982 25 15
6.82 14.22780982 30 18
6.82 14.22780982 35 12
6.82 14.22780982 40 4
6.82 14.22780982 45 1
6.82 14.22780982 50 2
6.82 14.22780982 55 2
6.82 14.22780982 60 1
7.63 14.50326362 5 5
7.63 14.50326362 10 11
7.63 14.50326362 15 12
7.63 14.50326362 20 15
7.63 14.50326362 25 16
7.63 14.50326362 30 17
7.63 14.50326362 35 13
7.63 14.50326362 40 6
7.63 14.50326362 45 2
7.63 14.50326362 50 1
7.63 14.50326362 55 1
7.63 14.50326362 60 1
8.58 14.05544251 5 3
8.58 14.05544251 10 9
8.58 14.05544251 15 11
8.58 14.05544251 20 14
8.58 14.05544251 25 16
8.58 14.05544251 30 19
8.58 14.05544251 35 16
8.58 14.05544251 40 6
8.58 14.05544251 45 3
8.58 14.05544251 50 1
8.58 14.05544251 55 1
8.58 14.05544251 60 1
9.42 12.95075585 5 4
9.42 12.95075585 10 10
9.42 12.95075585 15 10
9.42 12.95075585 20 13
9.42 12.95075585 25 17
9.42 12.95075585 30 16
9.42 12.95075585 35 15
9.42 12.95075585 40 8
9.42 12.95075585 45 3
9.42 12.95075585 50 2
9.42 12.95075585 55 1
9.42 12.95075585 60 1
[Last edited by 超级丐中丐 on 2012-11-18 at 23:30]