Group Abstract Group Abstract

Message Boards Message Boards

0
|
3.7K Views
|
4 Replies
|
1 Total Like
View groups...
Share
Share this post:

Help fitting a dataset?

Zoeyy Dong
Posted 2 years ago
POSTED BY: Zoeyy Dong
4 Replies
Sort By:

Hello Zoeyy,

you don't say anything about the background (physics) of your data, so I have no idea of a reasonable fit. What do you think of this?

fff = FindFit[data1, a (1 - b Erf[x - c]), {{a, 2200}, {b, 3}, {c, 12}}, x]
h = a (1 - b Erf[x - c]) /. fff
Plot[h, {x, 0, 18}, PlotRange -> {0, 2500},  Epilog -> {Red, PointSize[.02], Point /@ data1}]
POSTED BY: Hans Dolhaine
Zoeyy Dong
Zoeyy Dong
Posted 2 years ago

That is exactly what I need. Thank you very much!!!
POSTED BY: Zoeyy Dong
Rohit Namjoshi
Rohit Namjoshi
Posted 2 years ago

Hi Zoeyy,

A polynomial would be a very bad fit to the values in data1

ListPlot[{data1, data2},
 Joined -> True,
 Mesh -> All,
 MultiaxisArrangement -> All]

enter image description here

Are you sure the values are correct?
POSTED BY: Rohit Namjoshi
Zoeyy Dong
Zoeyy Dong
Posted 2 years ago

Hi Rohit, thanks for the help. Yeah I will need another function for data 1, but I don't know what might be a good function equation.
POSTED BY: Zoeyy Dong
Reply to this discussion
Community posts can be styled and formatted using the Markdown syntax.
Tag limit exceeded
Note: Only the first five people you tag will receive an email notification; the other tagged names will appear as links to their profiles.
Reply Preview
Attachments
Remove
or Discard