OriginLab Corporation - Data Analysis and Graphing Software - 2D graphs, 3D graphs, Contour Plots, Statistical Charts, Data Exploration, Statistics, Curve Fitting, Signal Processing, and Peak Analysis
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File Exchange > Category:Curve Fitting >
   QuickFit - Fit data using script commands

Author:

OriginLab Technical Support

Date Added:

6/13/2003

Downloads:

3712

Last Update:

6/13/2003

Total Ratings:

13

File Size:

9245 Bytes

Average Rating:

File Name:

QuickFit.c

Created Using:

Origin 7.0

File Version:

1.0

Working Versions:

7.0

License:

Free

Summary:

This Origin C file provides a collection of simple script commands that can be used to quickly determine which nonlinear function best fits your data.

Description:

This Origin C file requires Origin 7SR3 or higher.

Add the file to your workspace and compile and link. If you want these commands to be available in every Origin session, add to System subfolder in workspace tree.

To fit data, first create a graph of the dataset to be fit, and make the graph page active. You can then issue commands from the script window.

The file adds the following commands:
1> fhelp: lists all commands
2> fhelp funcname: lists all parameters of specified function
3> flist: lists all function categories
4> flist category: lists all functions in specified category
5> ftry funcname: fits active dataset with specified function
6> ftry num1 num2...: fits with par1, par2 etc fixed to num1, num2 etc
7> ftry num1 skip num2: fits with par1, par3 fixed, but par2 is allowed to vary
(Note: you can use any non-numeric entry to allow in-between parameter to vary)
8> freset: Reset NLSF

Once you have found a 'quick' good fit to your data, you can further customize the fit by bringing up the NLSF Advanced Fitting tool to specify things such as upper/lower bounds for paramters etc.

Screen Shot:

img
 

Reviews:

Rated by: ksinsai

Date: (12/10/2008 8:19:12 AM)

i would fit with secant hyperbolic function (another function)but i can't can you help me.

Rated by: dvk7

Date: (1/20/2007 5:35:42 PM)

would be great if under "ftry" it was possible to define several functions: >ftry guass(x0=2) lorentz(x0=3)... (example when you have peak at x=2 with shoulder at 3). In general very simple and useful! will use...

Rated by: jiaocang

Date: (7/21/2006 3:25:26 AM)

This homepage cannot show chinese accurately.I must write it in english.Why The Pagemaker not use "ISO-8859-1" encode.I'd already used the encode to edit singnet.swjtu.edu.cn homepage in 2000.

Rated by: newbe

Date: (1/19/2006 8:32:08 AM)

I don't know how to make it work ...! Can anyone help me? Thank

Rated by: TYN

Date: (9/3/2005 2:48:10 AM)

I need it ,can you send it to me?thank you very much!my e-mail is tongyanan8011@163.com

Rated by: Crack

Date: (12/5/2004 12:51:20 AM)

Who want the crack file? Please send a message to d_eagle@126.com, I'll send it to the one who need it! I've flac3.3 and flac2.1 -242,It's all had been cracked. Only 2M bytes.

Rated by: Why can not display chinese

Date: (12/5/2004 12:47:01 AM)

Why can not display chinese? I plant it with chinese,It cannot display! Is't ??,???? ! The webmater should write a encode function! I saw this website in www.simwe.com. I've downloaded the Program. It's very good!

Rated by: ??(JiaoCang)

Date: (12/5/2004 12:41:13 AM)

??,????! Very good! Very Very good!!! My E-mail is jiaocang@126.com. My Telephone is +86 22 81587054. Please talk me with chinese!!!

Rated by: Jianwei

Date: (10/29/2003 1:51:23 PM)

It is a very useful feature for people doing a lot of fitting. This also remind me of the difficulty sometimes I had with selecting the range of data to fit.

Rated by: Francisco

Date: (9/19/2003 3:30:50 PM)

Super, I was expecting when Origin will come more close to quick Histogramming fitting. Will be great if you put all of this in a toolbar

Rated by: Dragos

Date: (9/11/2003 3:59:16 AM)

I did not succed to make it work ...! Some help? I think that might be good :o))

Rated by: Jun Kano

Date: (7/10/2003 4:57:43 AM)

Great!!

Rated by: Mike Buess

Date: (6/14/2003 4:04:00 PM)

This is extremely straightforward and easy to use. It may replace the Advanced Fitting Tool for much of my data analysis. Thanks!

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