Source code for PyMca5.PyMcaIO.APSMEDFileParser

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__author__ = "V.A. Sole - ESRF Data Analysis"
__contact__ = "sole@esrf.fr"
__license__ = "MIT"
__copyright__ = "European Synchrotron Radiation Facility, Grenoble, France"
import os
import sys
from PyMca5.PyMcaIO import MEDFile
from PyMca5.PyMcaIO import SpecFileAbstractClass

[docs]class APSMEDFileParser(object): def __init__(self, filename, sum_all=False): if not os.path.exists(filename): raise IOError("File %s does not exists" % filename) self._medFileObject = MEDFile.MEDFile(filename) #read the data #potentially each detector could have a different number of channels #should I support that? header = [] header.append('#S 1 %s Unknown command' % os.path.basename(filename)) header.append('#D %s' % self._medFileObject.mcas[0].start_time) if sum_all: realtime = 0 livetime = 0 cal_offset = 0 cal_slope = 0 cal_quad = 0 n = float(len(self._medFileObject.mcas)) for mca in self._medFileObject.mcas: realtime += (mca.realtime / n) livetime += (mca.livetime / n) cal_offset += (cal_offset / n) cal_slope += (cal_slope / n) cal_quad += (cal_quad / n) data = [self._medFileObject.get_data(sum_all=sum_all)] # this makes no sense in any case header.append('#@CTIME %f %f %f' % (realtime, realtime, livetime)) header.append('#@CALIB %f %f %f' % (cal_offset, cal_slope, cal_quad)) else: data = [] for mca in self._medFileObject.mcas: header.append('#@CTIME %f %f %f' % (mca.realtime, mca.realtime, mca.livetime)) header.append('#@CALIB %f %f %f' % (mca.cal_offset, mca.cal_slope, mca.cal_quad)) data.append(mca.data) self.motorNames = [] motorValues = [] for item in self._medFileObject.env: name, value = item.split("=") self.motorNames.append(name) motorValues.append(value) header.append('#' + item) #create an abstract scan object self._scan = [APSMEDScan(data, scanheader=header, motor_values=motorValues)] #the methods below are called by PyMca on any SPEC file def __getitem__(self, item): return self._scan[item]
[docs] def scanno(self): """ Gives back the number of scans in the file """ return len(self._scan)
[docs] def list(self): return "1:1"
[docs] def select(self, key): """ key is of the from s.o scan number, scan order """ n = key.split(".") return self.__getitem__(int(n[0]) - 1)
[docs] def allmotors(self): return self.motorNames
[docs]class APSMEDScan(SpecFileAbstractClass.SpecFileAbstractScan): def __init__(self, data, scantype='MCA', identification="1.1", scanheader=None, labels=None, motor_values=None): SpecFileAbstractClass.SpecFileAbstractScan.__init__(self, data, scantype=scantype, identification=identification, scanheader=scanheader, labels=labels) if motor_values is None: motor_values = [] self.motorValues = motor_values
[docs] def allmotorpos(self): return self.motorValues
[docs]def isAPSMEDFile(filename):
#Obviously I should put a better test than this one if not filename.upper().endswith(".XRF"): return False return True
[docs]def test(filename): if isAPSMEDFile(filename): sf = APSMEDFileParser(filename) else: print("Not an APS Multi-element detector file") print(sf[0].header('S')) print(sf[0].header('D')) print(sf[0].header('ID13ds')) print(sf[0].alllabels()) print(dir(sf[0])) print("number of mcas = %s " % sf[0].nbmca()) try: import pylab for i in range(sf[0].nbmca()): pylab.plot(sf[0].mca(i + 1)) pylab.show() except ImportError: pass
if __name__ == "__main__": test(sys.argv[1])