How to make function that goes between points

Question

0 个投票

Hello,

so I have data from excel for Y and X, but I can't figure out how to make plot that will show me function that goes between points from data. Can someone help?

Thanks to all that want to help

7 个评论
显示 5更早的评论隐藏 5更早的评论

Sam Chak 2024-1-27

Hi @Marcin

If my guess is correct, RBFN stands for Radial Basis Functions Network. In essence, the RBFN model is used to fit the data, and it likely consists of numerous nodes and layers, making it challenging to express the model as a elegant analytical function, like an exponentially-growing sinusoidal signal (<-- keywords).

John D'Errico 2024-1-27

编辑：John D'Errico 2024-1-27

There are many possible errors you will make, if all you do is try to use a tool like polyfit, or for that matter, any modeling tool. And since we do not see your data, we cannot know which of those failure modes you will most probably trip upon. This will be a learning experience for you. You can do a lot of reading, but even then, reading will not give you the knowledge you will need to make the decisions about which model might be best to use. The point being, it would help if you post your real data. Not fake data. That way we can advise you better in a choice of model.

As well, you need to know what you want from that model. Do you simply want a pretty picture of a curve drawn through the data? Will you want to write the actual model down, in a report, your homework assignment, or a paper? What will you be using the model for? What do you know about the data? What information, if any, do you have about any properties that are necessary in the resultant model? Must the curve pass through the origin, for example? Must it be monotonic to make physical sense?

All of these things and more are important in your choice of a model form. The more and better information you can provide, the better an answer someone can offer to you.

请先登录，再进行评论。

请先登录，再回答此问题。

Follow Question