Estimate the unknown parameters of an equation with the help of matlab?
3 次查看(过去 30 天)
显示 更早的评论
Hello all,
We have some sample equations as given below (Not exact equations, these are for illustration purpose only). Let define new functional
I have sample data contain Q and as two columns. when we plot, Q along X axis and along Y axis, it gives a straight line.
Can I fit it with the functional to estimate the unknown parameters g , k with the help of matlab?
0 个评论
回答(1 个)
Star Strider
2020-7-14
Parameter estimation is straightforward in MATLAB, even for relatively complicated problems.
Write your objective function to calculate values of as a function of Q, and you should have no problems fitting your data. It would be easiest to use nlinfit or lsqccurvefit, however those are two of many options.
Your objective function must be in the form:
objFcn = @(b,x) <expression>;
for it to work with any of these, with ‘b’ being the parameter vector, and ‘x’ being the independent variable (here, ‘Q’).
0 个评论
另请参阅
类别
在 Help Center 和 File Exchange 中查找有关 Least Squares 的更多信息
产品
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!