求助: fitting y=a+bx+cx^-2+dx^2# Computation - 科学计算
w*n
1 楼
有一组(x,y)数据需要fitting 成y=a+bx+cx^(-2)+dx^2. 求教各位你们用过什么软件可
以实现? 先感谢!!!!
以实现? 先感谢!!!!
L*g
2 楼
origin, custom fitting.
s*t
3 楼
almost anything ah. under matlab
a = [ones(size(x)) x x.^(-2) x.^2]\y;
assuming you have column vectors.
【在 w*******n 的大作中提到】
: 有一组(x,y)数据需要fitting 成y=a+bx+cx^(-2)+dx^2. 求教各位你们用过什么软件可
: 以实现? 先感谢!!!!
a = [ones(size(x)) x x.^(-2) x.^2]\y;
assuming you have column vectors.
【在 w*******n 的大作中提到】
: 有一组(x,y)数据需要fitting 成y=a+bx+cx^(-2)+dx^2. 求教各位你们用过什么软件可
: 以实现? 先感谢!!!!
w*n
4 楼
I used origin 6.0 and did not make it. will try again. thanks, Localking!
I have not used the matlab before although installed once. Anyway, thank you
, sunxt.
I have not used the matlab before although installed once. Anyway, thank you
, sunxt.
L*g
5 楼
You are welcome. I'm using origin 7.5,
go to Analysis->Non-linear curve fit->Advanced fitting tool,
"more" if you are in the basic mode.
press the 3rd button to create your own fitting function.
you
【在 w*******n 的大作中提到】
: I used origin 6.0 and did not make it. will try again. thanks, Localking!
: I have not used the matlab before although installed once. Anyway, thank you
: , sunxt.
go to Analysis->Non-linear curve fit->Advanced fitting tool,
"more" if you are in the basic mode.
press the 3rd button to create your own fitting function.
you
【在 w*******n 的大作中提到】
: I used origin 6.0 and did not make it. will try again. thanks, Localking!
: I have not used the matlab before although installed once. Anyway, thank you
: , sunxt.
w*n
6 楼
downloaded one, 7 days license, but it works. thanks again.
W*W
7 楼
use cftool of Matlab
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