- Timestamp:
- Aug 22, 2016 5:03:51 AM (8 years ago)
- Branches:
- master, ESS_GUI, ESS_GUI_Docs, ESS_GUI_batch_fitting, ESS_GUI_bumps_abstraction, ESS_GUI_iss1116, ESS_GUI_iss879, ESS_GUI_iss959, ESS_GUI_opencl, ESS_GUI_ordering, ESS_GUI_sync_sascalc, costrafo411, magnetic_scatt, release-4.1.1, release-4.1.2, release-4.2.2, ticket-1009, ticket-1094-headless, ticket-1242-2d-resolution, ticket-1243, ticket-1249, ticket885, unittest-saveload
- Children:
- 93b145a
- Parents:
- 9a15a87
- git-author:
- Lewis O'Driscoll <lewis.o'driscoll@…> (08/22/16 04:41:19)
- git-committer:
- Lewis O'Driscoll <lewis.o'driscoll@…> (08/22/16 05:03:51)
- Location:
- src/sas
- Files:
-
- 2 edited
Legend:
- Unmodified
- Added
- Removed
-
src/sas/sascalc/corfunc/corfunc_calculator.py
r20e09c6 rc97d76a 240 240 """Fit the Porod region of the curve""" 241 241 fitp = curve_fit(lambda q, k, sig, bg: self._porod(q, k, sig, bg)*q**2, 242 q, iq*q**2 )[0]242 q, iq*q**2, bounds=([-np.inf, 0, -np.inf], [np.inf, np.inf, np.inf]))[0] 243 243 k, sigma, bg = fitp 244 244 return k, sigma, bg -
src/sas/sasgui/perspectives/corfunc/media/corfunc_help.rst
r32c5983 rc97d76a 51 51 52 52 .. math:: 53 I(Q) = B + KQ^{-4}e^{-Q^2\sigma^2}53 I(Q) = Bg + KQ^{-4}e^{-Q^2\sigma^2} 54 54 55 Where :math:`B ` is the Bonart thermal background, :math:`K` is the Porod56 constant, and :math:`\sigma ` describes the electron (or neutron scattering55 Where :math:`Bg` is the Bonart thermal background, :math:`K` is the Porod 56 constant, and :math:`\sigma > 0` describes the electron (or neutron scattering 57 57 length) density profile at the interface between crystalline and amorphous 58 58 regions (see figure 1). … … 133 133 Usage 134 134 ----- 135 Upon sending data for correlation function analysis, it will be plotted, 136 along with a red bar indicating the lower Q range (used for back-extrapolation), 137 and 2 purple bars indicating the upper qrange (used for forward-extrapolation) 138 [figure 3]. These bars may be moved my clicking and dragging, or by entering 135 Upon sending data for correlation function analysis, it will be plotted, 136 along with a red bar indicating the lower Q range (used for back-extrapolation), 137 and 2 purple bars indicating the upper qrange (used for forward-extrapolation) 138 [figure 3]. These bars may be moved my clicking and dragging, or by entering 139 139 the appropriate value in the Q range input boxes. 140 140
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