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JoannaZajac
United Kingdom
14 Posts |
 Posted - 10/20/2011 : 10:33:16 AM
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Origin Ver. 7 and Service Release (Select Help-->About Origin):
Operating System: winXP
Hi, I need to make nonlinear curve fitting using erf function on a matrix data,
my first question does origin 7 has ready to use erf function and where to find it, I did not find it in non-linear fitting tool
second question is if matrix fitting is possible?
Joanna
Joanna |
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Hideo Fujii
USA
1582 Posts |
Posted - 10/20/2011 : 11:13:03 AM
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Hi Joanna,
Origin version 7 doesn't have a feature of fitting directly to a matrix. However, the current OriginPro 8.5.1 is capable to do it.
--Hideo Fujii
OriginLab |
Edited by - Hideo Fujii on 10/20/2011 11:16:47 AM |
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JoannaZajac
United Kingdom
14 Posts |
Posted - 10/20/2011 : 11:20:43 AM
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quote:
Originally posted by Hideo Fujii
Hi Joanna,
Origin version 7 doesn't have a feature of fitting directly to a matrix. However, the current OriginPro 8.5.1 is capable to do it.
--Hideo Fujii
OriginLab
Hi Fujii,
7 is version used by university(cardiff uni) and i have to use it
what about erf function?
Joanna |
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Hideo Fujii
USA
1582 Posts |
Posted - 10/20/2011 : 2:23:50 PM
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Hi Joanna,
erf(x) doesn't have any parameter, but you can use it(at least I have checked in ver. 8.5.1) in the definition of your user-defined function,
e.g., y=A*erf(x-x0)+y0
--Hideo Fujii
OriginLab |
Edited by - Hideo Fujii on 10/20/2011 3:18:48 PM |
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erf function