94 lines
3.7 KiB
Python
Executable File
94 lines
3.7 KiB
Python
Executable File
#!/usr/bin/env python3
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import os
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import sys
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from optparse import OptionParser
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import numpy as np
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import damask
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scriptName = os.path.splitext(os.path.basename(__file__))[0]
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scriptID = ' '.join([scriptName,damask.version])
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# --------------------------------------------------------------------
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# MAIN
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# --------------------------------------------------------------------
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parser = OptionParser(option_class=damask.extendableOption, usage='%prog options [ASCIItable(s)]', description = """
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Add coordinates of stereographic projection of given direction (pole) in crystal frame.
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""", version = scriptID)
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parser.add_option('-p',
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'--pole',
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dest = 'pole',
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type = 'float', nargs = 3, metavar = 'float float float',
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help = 'crystal frame direction for pole figure [%default]')
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parser.add_option('--polar',
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dest = 'polar',
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action = 'store_true',
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help = 'output polar coordinates (r,φ) instead of Cartesian coordinates (x,y)')
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parser.add_option('-o',
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'--orientation',
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dest = 'quaternion',
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metavar = 'string',
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help = 'label of crystal orientation given as unit quaternion [%default]')
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parser.set_defaults(pole = (1.0,0.0,0.0),
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quaternion = 'orientation',
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)
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(options, filenames) = parser.parse_args()
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pole = np.array(options.pole)
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pole /= np.linalg.norm(pole)
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# --- loop over input files -------------------------------------------------------------------------
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if filenames == []: filenames = [None]
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for name in filenames:
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try:
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table = damask.ASCIItable(name = name,
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buffered = False)
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except: continue
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damask.util.report(scriptName,name)
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# ------------------------------------------ read header ------------------------------------------
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table.head_read()
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# ------------------------------------------ sanity checks ----------------------------------------
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if not table.label_dimension(options.quaternion) == 4:
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damask.util.croak('input {} does not have dimension 4.'.format(options.quaternion))
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table.close(dismiss = True) # close ASCIItable and remove empty file
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continue
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column = table.label_index(options.quaternion)
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# ------------------------------------------ assemble header ---------------------------------------
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table.info_append(scriptID + '\t' + ' '.join(sys.argv[1:]))
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table.labels_append(['{}_pole_{}{}{}'.format(i+1,*options.pole) for i in range(2)])
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table.head_write()
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# ------------------------------------------ process data ------------------------------------------
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outputAlive = True
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while outputAlive and table.data_read(): # read next data line of ASCII table
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o = damask.Rotation(np.array(list(map(float,table.data[column:column+4]))))
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rotatedPole = o*pole # rotate pole according to crystal orientation
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(x,y) = rotatedPole[0:2]/(1.+abs(pole[2])) # stereographic projection
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table.data_append([np.sqrt(x*x+y*y),np.arctan2(y,x)] if options.polar else [x,y]) # cartesian coordinates
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outputAlive = table.data_write() # output processed line
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# ------------------------------------------ output finalization -----------------------------------
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table.close() # close ASCII tables
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