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#/*##########################################################################
# Copyright (C) 2004-2014 European Synchrotron Radiation Facility
#
# This file is part of the PyMca X-ray Fluorescence Toolkit developed at
# the ESRF by the Software group.
#
# This toolkit is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the Free
# Software Foundation; either version 2 of the License, or (at your option)
# any later version.
#
# PyMca is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
# details.
#
# You should have received a copy of the GNU General Public License along with
# PyMca; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
# PyMca follows the dual licensing model of Riverbank's PyQt and cannot be
# used as a free plugin for a non-free program.
#
# Please contact the ESRF industrial unit (industry@esrf.fr) if this license
# is a problem for you.
#############################################################################*/
__author__ = "V.A. Sole - ESRF Software group"
import numpy
from PyMca import DataObject
from PyMca.PyMcaIO import specfilewrapper as specfile
SOURCE_TYPE = "SpecFileStack"
class OpusDPTMap(DataObject.DataObject):
def __init__(self, filename):
DataObject.DataObject.__init__(self)
sf = specfile.Specfile(filename)
scan = sf[1]
data = scan.data()
nMca, nchannels = data.shape
nMca = nMca - 1
xValues = data[0, :] * 1
xValues.shape = -1
if 0:
self.data = numpy.zeros((nMca, nchannels), numpy.float32)
self.data[:, :] = data[1:, :]
self.data.shape = 1, nMca, nchannels
else:
self.data = data[1:, :]
self.data.shape = 1, nMca, nchannels
data = None
#perform a least squares adjustment to a line
x = numpy.arange(nchannels).astype(numpy.float32)
Sxy = numpy.dot(x, xValues.T)
Sxx = numpy.dot(x, x.T)
Sx = x.sum()
Sy = xValues.sum()
d = nchannels * Sxx - Sx * Sx
zero = (Sxx * Sy - Sx * Sxy) / d
gain = (nchannels * Sxy - Sx * Sy) / d
#and fill the requested information to be identified as a stack
self.info['SourceName'] = [filename]
self.info["SourceType"] = "SpecFileStack"
self.info["Size"] = 1, nMca, nchannels
self.info["NumberOfFiles"] = 1
self.info["FileIndex"] = 0
self.info["McaCalib"] = [zero, gain, 0.0]
self.info["Channel0"] = 0.0
def main():
import sys
filename = None
if len(sys.argv) > 1:
filename = sys.argv[1]
if filename is not None:
OpusDPTMap(filename)
else:
print("Please supply input filename")
if __name__ == "__main__":
main()
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