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 Fitting Invers Heaviside function		  New Topic  Reply to Topic
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Biotec12

Armenia
8 Posts
Posted - 02/25/2015 :  11:26:48 PM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
Origin Ver. OriginPro 8.6.0 (64-bit) Sr3
serial number: SF8T5-3089-7902432
Operating system: Windows terminal server

Dear All,

I am trying to fit data with a function of the following form

Independent Variable is F

Dependent Variable is x

Parameters are L,k,m,a


if(x<a) F = 0;
else x = function(L,m,k;F)+a;

1. This dose not work for positive "a" I have no clue why.

2. I can fit x = function(L,m,k;F) to the part of my data but when I am introducing above mentioned fitting function with "if (x<a)...." I am not able to fit whole data.

I included an image how date may looks like.
http://www.originlab.com/ftp/forum_and_kbase/Images/Example for Origin.pdf
Edited by - Biotec12 on 02/25/2015 11:46:17 PM

jasonzhao

China
262 Posts
Posted - 02/26/2015 :  05:00:17 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hello,

Would you please send your data and fitting function to tech@originlab.com for a further check?

Best regards!
Jason
OriginLab Technical Service
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