derive an equation from data in a table

Question

milad babaei 2011-6-25

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/10250-derive-an-equation-from-data-in-a-table

i have a table with 3 variables a= 1,2,3,4,5,6,7,8 and fi= 0,10,20,30 and h which is depend on a and fi that contain 32 values. for example for fi=0 and a=1 >>h=1 fi=0 and a=2 >>h=1.02 ...... fi=30 and a=8 >>h=14800

is there any way in MATLAB to generate an equation for h in terms of a and fi??

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

bym 2011-6-25

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/10250-derive-an-equation-from-data-in-a-table#answer_14100

在 MATLAB Online 中打开

use the backslash (mldivide) to solve system of equations

doc mldivide

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

Answer 2

Walter Roberson 2011-6-25

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/10250-derive-an-equation-from-data-in-a-table#answer_14108

There are a (literally) infinite number of equations that can be fit to any finite set of data. If you do not have a model of what kind of equation is appropriate, you cannot reject any of those equations as being less "correct" than the others. Unless you have a model of the actual equation, the probability of recovering the actual equation is zero. :(

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

milad babaei 2011-6-27

i know that and tnx for reminding me.would u please explain me more ,what type of equations fit on my data (z=ax+by+c or...)and what should i do in matlab to get that equation???

请先登录，再进行评论。