| T O P I C R E V I E W |
| pb |
Posted - 12/13/2006 : 08:39:52 AM
Origin Version: 6.0 or 7.5 SR1
Operating System: Windows XP Pro
Hi,
I need to fit some data with an asymmetric Gaussian profile.
I have tried defining my own function in the non linear curve fit panel,
if x<xc
y=(A1/(w1*sqrt(PI/2)))*exp(-2*((x-xc)/w1)^2);
else
y=(A2/(w2*sqrt(PI/2)))*exp(-2*((x-xc)/w2)^2);
however, there is discontinuity in xc. In the constraint panel I have tried imposing that the max of the two gaussians has to be the same
(A1/(w1*sqrt(PI/2)))=(A2/(w2*sqrt(PI/2)));
but the constraint was not accepted (may be it has to be linear?)
Could you please help me to solve this discontinuity problem?
Many thanks
paola |
| 3 L A T E S T R E P L I E S (Newest First) |
| SvenP |
Posted - 08/26/2010 : 06:03:55 AM
quote:
Originally posted by Mike Buess
Hi Paolo,
Tutorial 11 > Defining a New Fitting Function describes specifically how to define the Asymmetric Gaussian.
Mike Buess
Origin WebRing Member
Where can I find this? |
| pb |
Posted - 12/13/2006 : 12:17:32 PM
Many thanks Mike !
Paola |
| Mike Buess |
Posted - 12/13/2006 : 09:13:32 AM
Hi Paolo,
Tutorial 11 > Defining a New Fitting Function describes specifically how to define the Asymmetric Gaussian.
Mike Buess
Origin WebRing Member |
