DAMASK_EICMD/processing/post/addDeterminant.py

#!/usr/bin/env python3

import os
import sys
from io import StringIO
from optparse import OptionParser

import numpy as np

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 column(s) containing determinant of requested tensor column(s).

""", version = scriptID)

parser.add_option('-t','--tensor',
                  dest = 'tensor',
                  action = 'extend', metavar = '<string LIST>',
                  help = 'heading of columns containing tensor field values')

(options,filenames) = parser.parse_args()
if filenames == []: filenames = [None]

if options.tensor is None:
  parser.error('no data column specified.')

for name in filenames:
    damask.util.report(scriptName,name)

    table = damask.Table.from_ASCII(StringIO(''.join(sys.stdin.read())) if name is None else name)
    for tensor in options.tensor:
         table.add('det({})'.format(tensor),
                   np.linalg.det(table.get(tensor).reshape(-1,3,3)),
                   scriptID+' '+' '.join(sys.argv[1:]))

    table.to_ASCII(sys.stdout if name is None else name)