Ticket #11210 (closed: fixed)
Create Pseudo-Voigt function with mixing parameter
| Reported by: | Michael Wedel | Owned by: | Michael Wedel |
|---|---|---|---|
| Priority: | major | Milestone: | Release 3.4 |
| Component: | Diffraction | Keywords: | POLDI |
| Cc: | Blocked By: | ||
| Blocking: | Tester: | Roman Tolchenov |
Description (last modified by Michael Wedel) (diff)
The Pseudo-Voigt function is a mixture of a Gaussian and a Lorentzian, with a mixing parameter a, which is on the interval [0,1]:
f(x) = a * G(x) + (1-a) * L(x)
FWHM is the same for Gaussian and Lorentzian part, as are height and center. I would like to implement this function because it has been requested as a profile function for fitting POLDI data.
Attachments
Change History
comment:2 Changed 6 years ago by Michael Wedel
- Status changed from new to inprogress
Refs #11210. Added Pseudo-Voigt function
The unit test checks function values and derivatives against data obtained with matlab.
Changeset: 77f2737f37a461ddf298fd0b1e53c28f07df7c79
comment:3 Changed 6 years ago by Michael Wedel
Refs #11210. Increasing penalty for mixing constraint
Changeset: 5a7e10f707764822c3d4f5ed92a4aa9548f2b0e4
comment:4 Changed 6 years ago by Michael Wedel
Refs #11210. Adding documentation, more unit tests.
Changeset: a8bb1c20c3b3394ac40f80900fbd1f8c4712c6d6
comment:5 Changed 6 years ago by Michael Wedel
- Status changed from inprogress to verify
- Resolution set to fixed
This is being verified as pull request #352.
comment:6 Changed 6 years ago by Michael Wedel
Refs #11210. Adding cmath header
Changeset: 6bacf477da6f4649e670cba223bff979d3dd2816
comment:7 Changed 6 years ago by Roman Tolchenov
- Status changed from verify to verifying
- Tester set to Roman Tolchenov
comment:8 Changed 6 years ago by Roman Tolchenov
- Status changed from verifying to closed
Merge pull request #352 from mantidproject/11210_add_pseudo_voigt_function
Add PseudoVoigt profile function
Full changeset: a79431fb73f6c4e0821b36722bb5cc52095bcc72
