DAMASK_EICMD/processing/post/addPole.py

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#!/usr/bin/env python3
# -*- coding: UTF-8 no BOM -*-
import os,sys
import numpy as np
from optparse import OptionParser
import damask
scriptName = os.path.splitext(os.path.basename(__file__))[0]
scriptID = ' '.join([scriptName,damask.version])
# --------------------------------------------------------------------
# MAIN
# --------------------------------------------------------------------
parser = OptionParser(option_class=damask.extendableOption, usage='%prog options [ASCIItable(s)]', description = """
Add coordinates of stereographic projection of given direction (pole) in crystal frame.
""", version = scriptID)
parser.add_option('-p',
'--pole',
dest = 'pole',
type = 'float', nargs = 3, metavar = 'float float float',
help = 'crystal frame direction for pole figure [%default]')
parser.add_option('--polar',
dest = 'polar',
action = 'store_true',
help = 'output polar coordinates (r,φ) instead of Cartesian coordinates (x,y)')
parser.add_option('-o',
'--orientation',
dest = 'quaternion',
metavar = 'string',
help = 'label of crystal orientation given as unit quaternion [%default]')
parser.set_defaults(pole = (1.0,0.0,0.0),
quaternion = 'orientation',
)
(options, filenames) = parser.parse_args()
pole = np.array(options.pole)
pole /= np.linalg.norm(pole)
# --- loop over input files -------------------------------------------------------------------------
if filenames == []: filenames = [None]
for name in filenames:
try:
table = damask.ASCIItable(name = name,
buffered = False)
except: continue
damask.util.report(scriptName,name)
# ------------------------------------------ read header ------------------------------------------
table.head_read()
# ------------------------------------------ sanity checks ----------------------------------------
if not table.label_dimension(options.quaternion) == 4:
damask.util.croak('input {} does not have dimension 4.'.format(options.quaternion))
table.close(dismiss = True) # close ASCIItable and remove empty file
continue
column = table.label_index(options.quaternion)
# ------------------------------------------ assemble header ---------------------------------------
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)])
table.head_write()
# ------------------------------------------ process data ------------------------------------------
outputAlive = True
while outputAlive and table.data_read(): # read next data line of ASCII table
o = damask.Orientation(quaternion = np.array(list(map(float,table.data[column:column+4]))))
rotatedPole = o.quaternion*pole # rotate pole according to crystal orientation
(x,y) = rotatedPole[0:2]/(1.+abs(pole[2])) # stereographic projection
table.data_append([np.sqrt(x*x+y*y),np.arctan2(y,x)] if options.polar else [x,y]) # cartesian coordinates
outputAlive = table.data_write() # output processed line
# ------------------------------------------ output finalization -----------------------------------
table.close() # close ASCII tables