曲线拟合问题。

最近遇到一个问题,得到一些散点,想要将其拟合成曲线,感觉像是负指数分布,但是用matlab拟合工具箱拟合出来的效果很不理想,有哪位大神能帮帮忙,感激不尽!!!!!!
散点的的fig图,拟合图附件附上,谢谢,谢谢的说。。。。
给出了数据excel文档,d为横坐标,p为纵坐标

 Accepted Answer

hexawa
hexawa on 24 Nov 2022

0 votes

General model Power1:
f(x) = a*x^b
Coefficients (with 95% confidence bounds):
a = 1.548e+005 (1.383e+005, 1.714e+005)
b = -0.5684 (-0.6073, -0.5295)
Goodness of fit:
SSE: 8.809e+008
R-square: 0.9337
Adjusted R-square: 0.9329
RMSE: 3298

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on 24 Nov 2022

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on 24 Nov 2022

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