#!/usr/bin/env python
##############################################################################
#
# diffpy.pdfmorph by DANSE Diffraction group
# Simon J. L. Billinge
# (c) 2010 Trustees of the Columbia University
# in the City of New York. All rights reserved.
#
# File coded by: Chris Farrow
#
# See AUTHORS.txt for a list of people who contributed.
# See LICENSE.txt for license information.
#
##############################################################################
"""class MorphResolutionDamping -- apply resolution broadening to the morph
"""
import numpy
from diffpy.pdfmorph.morphs.morph import LABEL_RA, LABEL_RR, Morph
[docs]
class MorphResolutionDamping(Morph):
"""Apply resolution damping and broadening to the morph.
Configuration Variables
-----------------------
qdamp
Peak dampening term.
Notes
-----
See the PDFgui manual for how this is used.
"""
# Define input output types
summary = "Apply resolution damping to the morph"
xinlabel = LABEL_RA
yinlabel = LABEL_RR
xoutlabel = LABEL_RA
youtlabel = LABEL_RR
parnames = ["qdamp"]
[docs]
def morph(self, x_morph, y_morph, x_target, y_target):
"""Apply a resolution damping."""
Morph.morph(self, x_morph, y_morph, x_target, y_target)
b = numpy.exp(-0.5 * (self.x_morph_in * self.qdamp) ** 2)
self.y_morph_out *= b
return self.xyallout
# End of class MorphResolutionDamping