How can i find an equation from datas?

Hello,

As part of a renewable energy optimization project,

I am trying to define an equation from wind and photovoltaic data over one year using the fit or lsqnonlin function.

How can i find an equation from this datas?

can you help me

[Ameer Hamza]

You need to have a model to fit the data. Otherwise, there is no unique solution. You can pick any equation, and it data will fit to the data to some degree.

[KSSV]

Read about polyfit, curvefitting toolbox.

[Alex Sha]

Hi, Clothilde, post out your data if possible.

Answer 1

[Athul Prakash]

You may pick out a model first to fit your data onto. There a wide variety of models available in Matlab and the choice would depend on the kind of data that you have - if you can post the data here along with your question, you may get better recommendations.

To start with, I would recommend polyfit or lsqnonlin. I might also try playing with simple Neural Network models as a next step.

Have a look at this doc as well:

https://www.mathworks.com/help/curvefit/curve-fitting.html

Hope it helps!