现有一组数据需要拟合函数,图形如下:
![请高手帮忙拟合一下曲线]()
我觉得是指数函数,但在origin中没拟合出来。之前没接触过函数拟合。
希望有高手帮忙拟合一下。如果用matlab之类,最好顺带给出代码。
数据如下,谢谢。
x,y
0,3702437
0.5,1507600.5
1,1059859.5
1.5,827846.5
2,695960.5
2.5,603978.5
3,531376.25
3.5,470432.75
4,417821
4.5,372112
5,332408.75
5.5,298021
6,268319.5
6.5,242717.25
7,220671.5
7.5,201691
8,185337.5
8.5,171226.75
9,159026.5
9.5,148449.5
10,139249.75
10.5,131219.25
11,124179
11.5,117979
12,112491.25
12.5,107607
13,103235.5
13.5,99298.75
14,95731.75
14.5,92479.25
15,89494.75
15.5,86738.75
16,84178.75
16.5,81786.5
17,79538.25
17.5,77414.75
18,75399.75
18.5,73478.75
19,71641
19.5,69875.5
20,68175.25
20.5,66533.25
21,64944
21.5,63402
22,61904
22.5,60446
23,59026
23.5,57641.5
24,56290
24.5,54970.25
25,53681.25
25.5,52420.75
26,51188.5
26.5,49983
27,48804.25
27.5,47650.75
28,46522
28.5,45417.75
29,44337
29.5,43279.25
30,42244.75
30.5,41232
31,40241
31.5,39271.5
32,38322.5
32.5,37394
33,36486
33.5,35597
34,34727.5
34.5,33877
35,33044.5
35.5,32230
36,31433.25
36.5,30653.75
37,29891.25
37.5,29145
38,28415
38.5,27700.5
39,27002
39.5,26318.25
40,25649.25
40.5,24995
41,24354.75
41.5,23728.5
42,23115.5
42.5,22515.5
43,21929
43.5,21354.75
44,20792.75
44.5,20243.25
45,19705.25
45.5,19179
46,18664
46.5,18160.25
47,17667.25
47.5,17184.75
48,16712.75
48.5,16251
49,15799
49.5,15356.75
50,14924.5
50.5,14501.25
51,14087.25
51.5,13682
52,13285.75
52.5,12898
53,12519
53.5,12148.25
54,11785
54.5,11430
55,11083.25
55.5,10744
56,10412
56.5,10087.5
57,9770
57.5,9459.5
58,9156.25
58.5,8859.5
59,8569.75
59.5,8286.25
60,8009.5
60.5,7738.75
61,7474.25
61.5,7215.75
62,6963.5
62.5,6716.75
63,6476
63.5,6240.5
64,6010.5
64.5,5786.25
65,5567.25
65.5,5353.5
66,5144.5
66.5,4940.5
67,4741.75
67.5,4547.5
68,4358.5
68.5,4173.75
69,3993.75
69.5,3817.75
70,3646.5
70.5,3479.5
71,3316.75
71.5,3158
72,3003.5
72.5,2852.5
73,2705.75
73.5,2563
74,2423.5
74.5,2287.75
75,2156
75.5,2027.5
76,1902.25
76.5,1780.5
77,1662.25
77.5,1547
78,1435
78.5,1326.25
79,1220.5
79.5,1117.5
80,1017.5
80.5,920.5
81,826
81.5,734.75
82,645.75
82.5,559.5
83,476
83.5,394.5
84,315.75
84.5,239.5
85,165.5
85.5,93.75
86,24.5 |