[求助] matlab非线性拟合中lsqcurvefit初值设置 已有1人参与

14楼: Originally posted by crasting at 2015-05-22 22:28:27
我是查资料得到的matlab中做非线性拟合函数有lsqcurvefit和lsqnonlin，所以当时就选了这个，问题是初值该怎么设？...

2楼: Originally posted by 信彼南山 at 2015-05-21 20:49:35
估计你的公式有错，按照你的公式，很难计算出合适的值

3楼: Originally posted by 信彼南山 at 2015-05-21 21:00:04
按照你的公式，可以进行推导：
(\Delta \lambda)^{2}+4(\lambda-\lambda0)^{2}=\frac{2\Delta \lambda}{f\pi}

(\Delta \lambda-\frac{1}{f\pi})^{2}+4(\lambda-\lambda0)^{2}-(\frac{1}{f\pi})^{2}=0


根据 ...