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[求助]
数据拟合分为三段的连续问题已有1人参与
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大家hao，我用1stopt分段拟合一组数据，自变量有x，t，因变量y。在x=21、x=185时分三段，分别为y1=a1*x+b1*T*x+d1, y2=a2*x+b2*T*x+d2，y3=a3*x+b3*T*x+d3要求三段在x=21、x=85点连续。（三列分别为x，t，y），我有2组数据，这里贴了一组，附件包括2组，麻烦牛人帮我一下，谢谢了（） x t y 0 29.475 1.0025 5 29.475 1.0552 9 29.475 1.1073 0 35.825 0.9991 5 35.825 1.0527 9 35.825 1.1052 0 40.775 0.9964 5 40.775 1.0537 9 40.775 1.1071 0 50.1 0.9964 5 50.1 1.0571 9 50.1 1.112 0 56.575 0.9954 5 56.575 1.0598 9 56.575 1.1165 0 67.575 0.9951 5 67.575 1.0498 9 67.575 1.1069 0 68.95 0.9933 5 68.95 1.0491 9 68.95 1.1066 0 88.475 0.9936 5 88.475 1.0561 9 88.475 1.1172 0 92.775 0.9945 5 92.775 1.0568 9 92.775 1.1185 0 93.525 0.9934 5 93.525 1.0551 9 93.525 1.1162 13 29.475 1.1628 17 29.475 1.2215 21 29.475 1.2829 13 35.825 1.1616 17 35.825 1.2208 21 35.825 1.2823 13 40.775 1.1647 17 40.775 1.2249 21 40.775 1.2883 13 50.1 1.1714 17 50.1 1.2335 21 50.1 1.2992 13 56.575 1.1776 17 56.575 1.2421 21 56.575 1.3099 13 67.575 1.1691 17 67.575 1.2353 21 67.575 1.3052 13 68.95 1.1695 17 68.95 1.2359 21 68.95 1.3055 13 88.475 1.1842 17 88.475 1.2555 21 88.475 1.3306 13 92.775 1.186 17 92.775 1.2577 21 92.775 1.3336 13 93.525 1.1826 17 93.525 1.2532 21 93.525 1.3285 25 29.475 1.3476 29 29.475 1.4136 33 29.475 1.4791 37 29.475 1.5391 41 29.475 1.601 45 29.475 1.6664 49 29.475 1.7379 53 29.475 1.8056 57 29.475 1.8769 61 29.475 1.9497 65 29.475 2.0235 69 29.475 2.0978 73 29.475 2.1725 77 29.475 2.2471 81 29.475 2.3208 85 29.475 2.3895 25 35.825 1.3475 29 35.825 1.4144 33 35.825 1.4799 37 35.825 1.541 41 35.825 1.6035 45 35.825 1.6697 49 35.825 1.7388 53 35.825 1.8098 57 35.825 1.8816 61 35.825 1.955 65 35.825 2.0293 69 35.825 2.1043 73 35.825 2.1793 77 35.825 2.2548 81 35.825 2.3289 85 35.825 2.3984 25 40.775 1.3541 29 40.775 1.4221 33 40.775 1.4889 37 40.775 1.5508 41 40.775 1.6147 45 40.775 1.6821 49 40.775 1.7522 53 40.775 1.824 57 40.775 1.8973 61 40.775 1.9719 65 40.775 2.0472 69 40.775 2.1229 73 40.775 2.1991 77 40.775 2.2754 81 40.775 2.3506 85 40.775 2.4211 25 50.1 1.368 29 50.1 1.4384 33 50.1 1.5079 37 50.1 1.5716 41 50.1 1.6375 45 50.1 1.7071 49 50.1 1.7797 53 50.1 1.8543 57 50.1 1.9294 61 50.1 2.0062 65 50.1 2.0842 69 50.1 2.1623 73 50.1 2.241 77 50.1 2.3191 81 50.1 2.3965 85 50.1 2.4689 25 56.575 1.3811 29 56.575 1.4538 33 56.575 1.5252 37 56.575 1.5913 41 56.575 1.6595 45 56.575 1.7308 49 56.575 1.8057 53 56.575 1.8826 57 56.575 1.9603 61 56.575 2.0398 65 56.575 2.1197 69 56.575 2.2003 73 56.575 2.2809 77 56.575 2.3621 81 56.575 2.4415 85 56.575 2.5158 25 67.575 1.3785 29 67.575 1.4546 33 67.575 1.5297 37 67.575 1.5999 41 67.575 1.6701 45 67.575 1.7438 49 67.575 1.8206 53 67.575 1.8999 57 67.575 1.981 61 67.575 2.0628 65 67.575 2.1459 69 67.575 2.2293 73 67.575 2.3135 77 67.575 2.3983 81 67.575 2.4809 85 67.575 2.5607 25 68.95 1.3789 29 68.95 1.4554 33 68.95 1.5307 37 68.95 1.6008 41 68.95 1.6721 45 68.95 1.7462 49 68.95 1.8235 53 68.95 1.9028 57 68.95 1.9834 61 68.95 2.0657 65 68.95 2.1487 69 68.95 2.2323 73 68.95 2.3161 77 68.95 2.4005 81 68.95 2.4832 85 68.95 2.5624 25 88.475 1.4087 29 88.475 1.4905 33 88.475 1.5716 37 88.475 1.6472 41 88.475 1.722 45 88.475 1.8011 49 88.475 1.8832 53 88.475 1.9677 57 88.475 2.0532 61 88.475 2.1396 65 88.475 2.2273 69 88.475 2.316 73 88.475 2.4049 77 88.475 2.4932 81 88.475 2.5804 85 88.475 2.6653 25 92.775 1.4135 29 92.775 1.4962 33 92.775 1.5788 37 92.775 1.656 41 92.775 1.7329 45 92.775 1.814 49 92.775 1.8981 53 92.775 1.9847 57 92.775 2.0732 61 92.775 2.1626 65 92.775 2.2533 69 92.775 2.3455 73 92.775 2.4362 77 92.775 2.5271 81 92.775 2.6183 85 92.775 2.7051 25 93.525 1.4062 29 93.525 1.4877 33 93.525 1.5689 37 93.525 1.6433 41 93.525 1.7198 45 93.525 1.7988 49 93.525 1.8815 53 93.525 1.9662 57 93.525 2.0518 61 93.525 2.1387 65 93.525 2.2267 69 93.525 2.3155 73 93.525 2.4042 77 93.525 2.4927 81 93.525 2.5799 85 93.525 2.6636 89 29.475 2.4543 93 29.475 2.5213 97 29.475 2.5906 101 29.475 2.6626 105 29.475 2.7354 109 29.475 2.8081 113 29.475 2.8816 117 29.475 2.9559 121 29.475 3.0306 125 29.475 3.1057 129 29.475 3.1806 133 29.475 3.2532 137 29.475 3.3208 141 29.475 3.3884 145 29.475 3.4596 149 29.475 3.5327 153 29.475 3.6079 157 29.475 3.6832 161 29.475 3.7596 165 29.475 3.8366 169 29.475 3.9134 173 29.475 3.9904 177 29.475 4.0682 181 29.475 4.1435 185 29.475 4.2138 89 35.825 2.4639 93 35.825 2.5311 97 35.825 2.6011 101 35.825 2.6734 105 35.825 2.7463 109 35.825 2.8199 113 35.825 2.894 117 35.825 2.9687 121 35.825 3.0437 125 35.825 3.1197 129 35.825 3.1952 133 35.825 3.2682 137 35.825 3.336 141 35.825 3.4047 145 35.825 3.4761 149 35.825 3.5496 153 35.825 3.6249 157 35.825 3.7009 161 35.825 3.7778 165 35.825 3.8552 169 35.825 3.9327 173 35.825 4.0099 177 35.825 4.0878 181 35.825 4.1639 185 35.825 4.2345 89 40.775 2.4873 93 40.775 2.5557 97 40.775 2.6268 101 40.775 2.6992 105 40.775 2.7734 109 40.775 2.8475 113 40.775 2.9225 117 40.775 2.9982 121 40.775 3.0739 125 40.775 3.1505 129 40.775 3.2263 133 40.775 3.3003 137 40.775 3.3688 141 40.775 3.4377 145 40.775 3.5094 149 40.775 3.5837 153 40.775 3.6599 157 40.775 3.7362 161 40.775 3.8134 165 40.775 3.8916 169 40.775 3.9693 173 40.775 4.0475 177 40.775 4.1257 181 40.775 4.2023 185 40.775 4.2737 89 50.1 2.5374 93 50.1 2.608 97 50.1 2.6806 101 50.1 2.7554 105 50.1 2.8313 109 50.1 2.9073 113 50.1 2.9841 117 50.1 3.0617 121 50.1 3.1391 125 50.1 3.2172 129 50.1 3.2946 133 50.1 3.3704 137 50.1 3.4399 141 50.1 3.5104 145 50.1 3.5838 149 50.1 3.6595 153 50.1 3.7368 157 50.1 3.8148 161 50.1 3.8937 165 50.1 3.9733 169 50.1 4.0525 173 50.1 4.1321 177 50.1 4.2115 181 50.1 4.2887 185 50.1 4.3613 89 56.575 2.5861 93 56.575 2.6585 97 56.575 2.7331 101 56.575 2.8104 105 56.575 2.8879 109 56.575 2.9661 113 56.575 3.0441 117 56.575 3.1232 121 56.575 3.2027 125 56.575 3.2823 129 56.575 3.3614 133 56.575 3.4246 137 56.575 3.5098 141 56.575 3.5817 145 56.575 3.6571 149 56.575 3.7339 153 56.575 3.8125 157 56.575 3.8918 161 56.575 3.9719 165 56.575 4.0526 169 56.575 4.1331 173 56.575 4.2137 177 56.575 4.2938 181 56.575 4.3729 185 56.575 4.4468 89 67.575 2.6337 93 67.575 2.7076 97 67.575 2.7846 101 67.575 2.8628 105 67.575 2.9429 109 67.575 3.0237 113 67.575 3.1046 117 67.575 3.1861 121 67.575 3.2668 125 67.575 3.3489 129 67.575 3.4312 133 67.575 3.5111 137 67.575 3.5856 141 67.575 3.6588 145 67.575 3.7351 149 67.575 3.8141 153 67.575 3.8939 157 67.575 3.9748 161 67.575 4.0568 165 67.575 4.1403 169 67.575 4.2229 173 67.575 4.3061 177 67.575 4.3892 181 67.575 4.4708 185 67.575 4.5482 89 68.95 2.6355 93 68.95 2.7101 97 68.95 2.7868 101 68.95 2.8662 105 68.95 2.9467 109 68.95 3.0271 113 68.95 3.1085 117 68.95 3.1908 121 68.95 3.2729 125 68.95 3.3559 129 68.95 3.4396 133 68.95 3.5202 137 68.95 3.5957 141 68.95 3.6702 145 68.95 3.7474 149 68.95 3.8273 153 68.95 3.9092 157 68.95 3.9922 161 68.95 4.0758 165 68.95 4.1606 169 68.95 4.2449 173 68.95 4.3291 177 68.95 4.4131 181 68.95 4.4961 185 68.95 4.5746 89 88.475 2.7438 93 88.475 2.8249 97 88.475 2.9074 101 88.475 2.9925 105 88.475 3.0785 109 88.475 3.1654 113 88.475 3.2532 117 88.475 3.3409 121 88.475 3.4294 125 88.475 3.5185 129 88.475 3.6068 133 88.475 3.6942 137 88.475 3.7753 141 88.475 3.854 145 88.475 3.9358 149 88.475 4.0209 153 88.475 4.1073 157 88.475 4.1929 161 88.475 4.2811 165 88.475 4.3697 169 88.475 4.4573 173 88.475 4.5458 177 88.475 4.6347 181 88.475 4.7204 185 88.475 4.8026 89 92.775 2.7844 93 92.775 2.8649 97 92.775 2.9486 101 92.775 3.0344 105 92.775 3.1208 109 92.775 3.2077 113 92.775 3.2954 117 92.775 3.3832 121 92.775 3.471 125 92.775 3.5589 129 92.775 3.6463 133 92.775 3.7323 137 92.775 3.8125 141 92.775 3.8909 145 92.775 3.9726 149 92.775 4.0574 153 92.775 4.1433 157 92.775 4.2295 161 92.775 4.3175 165 92.775 4.4055 169 92.775 4.4925 173 92.775 4.5806 177 92.775 4.6676 181 92.775 4.7536 185 92.775 4.8356 89 93.525 2.7405 93 93.525 2.8191 97 93.525 2.8995 101 93.525 2.9821 105 93.525 3.0658 109 93.525 3.1501 113 93.525 3.2355 117 93.525 3.3214 121 93.525 3.4069 125 93.525 3.4927 129 93.525 3.5789 133 93.525 3.6624 137 93.525 3.7412 141 93.525 3.8181 145 93.525 3.8981 149 93.525 3.9787 153 93.525 4.0627 157 93.525 4.1472 161 93.525 4.233 165 93.525 4.3198 169 93.525 4.4056 173 93.525 4.4909 177 93.525 4.5765 181 93.525 4.6599 185 93.525 4.7395 189 29.475 4.2778 193 29.475 4.3409 197 29.475 4.4045 201 29.475 4.4695 205 29.475 4.5348 209 29.475 4.6001 213 29.475 4.6651 217 29.475 4.7303 189 35.825 4.2992 193 35.825 4.3628 197 35.825 4.4269 201 35.825 4.4923 205 35.825 4.5584 209 35.825 4.6239 213 35.825 4.684 217 35.825 4.7547 189 40.775 4.3386 193 40.775 4.4025 197 40.775 4.4672 201 40.775 4.5324 205 40.775 4.5991 209 40.775 4.6651 213 40.775 4.7312 217 40.775 4.7968 189 50.1 4.4274 193 50.1 4.4921 197 50.1 4.5572 201 50.1 4.6234 205 50.1 4.6904 209 50.1 4.7571 213 50.1 4.8241 217 50.1 4.8902 189 56.575 4.5132 193 56.575 4.579 197 56.575 4.6446 201 56.575 4.7115 205 56.575 4.7795 209 56.575 4.8465 213 56.575 4.9138 217 56.575 4.9804 189 67.575 4.6173 193 67.575 4.6849 197 67.575 4.7525 201 67.575 4.8201 205 67.575 4.8895 209 67.575 4.9589 213 67.575 5.0279 217 67.575 5.0966 189 68.95 4.6457 193 68.95 4.7148 197 68.95 4.7832 201 68.95 4.8532 205 68.95 4.9237 209 68.95 4.9941 213 68.95 5.0643 217 68.95 5.1338 189 88.475 4.8772 193 88.475 4.9479 197 88.475 5.0193 201 88.475 5.0918 205 88.475 5.1646 209 88.475 5.2364 213 88.475 5.3083 217 88.475 5.3805 189 92.775 4.9081 193 92.775 4.9797 197 92.775 5.0517 201 92.775 5.124 205 92.775 5.1995 209 92.775 5.2727 213 92.775 5.3468 217 92.775 5.4198 189 93.525 4.811 193 93.525 4.8805 197 93.525 4.9499 201 93.525 5.0201 205 93.525 5.0909 209 93.525 5.1634 213 93.525 5.2365 217 93.525 5.3097 221 29.475 4.7947 221 35.825 4.8194 221 40.775 4.8619 221 50.1 4.9562 221 56.575 5.0467 221 67.575 5.1653 221 68.95 5.2034 221 88.475 5.4511 221 92.775 5.4921 221 93.525 5.3841 |
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