哪位大神能帮忙写个SAS macro,以实现数据的线性插值,结果满意一定追加金币,感激不尽。请发至
heidousl99@qq.com
以下是两组数据,希望能够通过macro他们实现线性插值. 比如已知X=22,求它对应的Y值。
| X | Y |
| 0 | -1.52415845 |
| 20 | -1.52415845 |
| 30 | -1.52415845 |
| 40 | -1.52415845 |
| 50 | -1.52415845 |
| 60 | -1.52415845 |
| 70 | -1.449555875 |
| 80 | -1.3749533 |
| 90 | -1.222169175 |
| 100 | -1.06938505 |
| 110 | -0.851728375 |
| 120 | -0.6340717 |
| 130 | -0.44796355 |
| 140 | -0.2618554 |
| X | Y |
| 0 | 0.738154 |
| 12 | 1.659497 |
| 24 | 1.630605 |
| 36 | 1.568769 |
| 48 | 1.546067 |
| 60 | 1.546067 |
| 72 | 1.396095 |
| 84 | 1.238461 |