我有一组格式如下的数据,要个将这些数据插值成均匀网格点,采用最近邻插值方法,用C++实现,不要每次插值都遍历全部数据,nodenumber, x-coordinate, y-coordinate, z-coordinate, x-velocity
1, 9.599838406E-02,-4.000161588E-02,-3.999999911E-02, 0.000000000E+00
2, 9.800061438E-02,-4.000161563E-02,-4.000000000E-02, 0.000000000E+00
3, 1.000001183E-01,-4.000161563E-02,-4.000000000E-02, 0.000000000E+00
4, 1.019996222E-01,-4.000161563E-02,-4.000000000E-02, 0.000000000E+00
5, 1.039991262E-01,-4.000161563E-02,-4.000000000E-02, 0.000000000E+00
6, 1.059986301E-01,-4.000161563E-02,-4.000000000E-02, 0.000000000E+00
7, 1.079981340E-01,-4.000161563E-02,-4.000000000E-02, 0.000000000E+00
8, 1.099976379E-01,-4.000161563E-02,-4.000000000E-02, 0.000000000E+00
9, 1.119971419E-01,-4.000161563E-02,-4.000000000E-02, 0.000000000E+00
10, 1.139966458E-01,-4.000161563E-02,-4.000000000E-02, 0.000000000E+00
11, 1.159961497E-01,-4.000161563E-02,-4.000000000E-02, 0.000000000E+00
12, 1.179956536E-01,-4.000161563E-02,-4.000000000E-02, 0.000000000E+00
13, 1.199951576E-01,-4.000161563E-02,-4.000000000E-02, 0.000000000E+00
14, 1.219946615E-01,-4.000161563E-02,-4.000000000E-02, 0.000000000E+00
15, 1.239941654E-01,-4.000161563E-02,-4.000000000E-02, 0.000000000E+00
16, 1.259936693E-01,-4.000161563E-02,-4.000000000E-02, 0.000000000E+00
17, 1.279931733E-01,-4.000161563E-02,-4.000000000E-02, 0.000000000E+00
18, 1.299926772E-01,-4.000161563E-02,-4.000000000E-02, 0.000000000E+00
19, 1.319921811E-01,-4.000161563E-02,-4.000000000E-02, 0.000000000E+00
20, 1.339916850E-01,-4.000161563E-02,-4.000000000E-02, 0.000000000E+00
21, 1.359911890E-01,-4.000161563E-02,-4.000000000E-02, 0.000000000E+00
22, 1.379906929E-01,-4.000161563E-02,-4.000000000E-02, 0.000000000E+00
23, 1.399901968E-01,-4.000161563E-02,-4.000000000E-02, 0.000000000E+00
24, 1.419897007E-01,-4.000161563E-02,-4.000000000E-02, 0.000000000E+00
25, 1.439892047E-01,-4.000161563E-02,-4.000000000E-02, 0.000000000E+00
26, 1.459887086E-01,-4.000161563E-02,-4.000000000E-02, 0.000000000E+00
27, 1.479882125E-01,-4.000161563E-02,-4.000000000E-02, 0.000000000E+00
28, 1.499877164E-01,-4.000161563E-02,-4.000000000E-02, 0.000000000E+00
29, 1.519872204E-01,-4.000161563E-02,-4.000000000E-02, 0.000000000E+00
30, 1.539867243E-01,-4.000161563E-02,-4.000000000E-02, 0.000000000E+00
31, 1.559862282E-01,-4.000161563E-02,-4.000000000E-02, 0.000000000E+00
32, 1.579857322E-01,-4.000161563E-02,-4.000000000E-02, 0.000000000E+00
33, 1.599852361E-01,-4.000161563E-02,-4.000000000E-02, 0.000000000E+00
34, 1.619847400E-01,-4.000161563E-02,-4.000000000E-02, 0.000000000E+00
35, 1.639842439E-01,-4.000161563E-02,-4.000000000E-02, 0.000000000E+00
36, 1.659837479E-01,-4.000161563E-02,-4.000000000E-02, 0.000000000E+00
37, 1.679832518E-01,-4.000161563E-02,-4.000000000E-02, 0.000000000E+00
38, 1.699827557E-01,-4.000161563E-02,-4.000000000E-02, 0.000000000E+00
39, 1.719822596E-01,-4.000161563E-02,-4.000000000E-02, 0.000000000E+00
40, 1.739817636E-01,-4.000161563E-02,-4.000000000E-02, 0.000000000E+00
41, 1.759983897E-01,-4.000161588E-02,-3.999999911E-02, 0.000000000E+00
42, 9.921171818E-02,-3.885718096E-02,-3.999999911E-02, 0.000000000E+00
43, 1.728281405E-01,-3.873344806E-02,-3.999999911E-02, 0.000000000E+00
44, 9.767820245E-02,-3.848635017E-02,-3.999999911E-02, 0.000000000E+00
45, 1.009102479E-01,-3.845369971E-02,-3.999999911E-02, 0.000000000E+00
46, 1.743783153E-01,-3.844525394E-02,-3.999999911E-02, 0.000000000E+00
47, 1.711286140E-01,-3.835494830E-02,-3.999999911E-02, 0.000000000E+00
48, 1.650089745E-01,-3.826525831E-02,-3.999999911E-02, 0.000000000E+00
49, 1.629962780E-01,-3.826392155E-02,-3.999999911E-02, 0.000000000E+00
50, 1.609913533E-01,-3.826228512E-02,-3.999999911E-02, 0.000000000E+00
51, 1.670408647E-01,-3.826106108E-02,-3.999999911E-02, 0.000000000E+00
52, 1.589892368E-01,-3.826014767E-02,-3.999999911E-02, 0.000000000E+00
53, 1.569887279E-01,-3.825847767E-02,-3.999999911E-02, 0.000000000E+00
54, 1.169975157E-01,-3.825808001E-02,-3.999999911E-02, 0.000000000E+00
55, 1.189963906E-01,-3.825787798E-02,-3.999999911E-02, 0.000000000E+00
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