[MATLAB基础] 如果一个字符变量里的某几个值

[ranyouhua]

大家好！问个基础的问题，我用FIT函数拟合的结果中，如下面是这个结果，存在的一个变量里，我想要提取那6个参数的值用于后面的计算，请问如果提取？谢谢！
FITTEDMODEL =

General model Sin2:
FITTEDMODEL(x) = a1*sin(b1*x+c1) + a2*sin(b2*x+c2)
Coefficients (with 95% confidence bounds):
a1 = 19.89 (4.76, 35.01)
b1 = 6.632 (4.655, 8.609)
c1 = 4.278 (3.002, 5.553)
a2 = -37.75 (-1.177e+005, 1.176e+005)
b2 = 0.138 (-432.1, 432.4)
c2 = 12.43 (-403.5, 428.4)