129 lines
5.3 KiB
Python
Executable File
129 lines
5.3 KiB
Python
Executable File
#!/usr/bin/env python
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# -*- coding: UTF-8 no BOM -*-
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import os,re,sys,math,string
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import numpy as np
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from optparse import OptionParser
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import damask
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scriptID = string.replace('$Id$','\n','\\n')
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scriptName = os.path.splitext(scriptID.split()[1])[0]
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def unravel(item):
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if hasattr(item,'__contains__'): return ' '.join(map(unravel,item))
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else: return str(item)
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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 [file[s]]', description = """
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Add column(s) with derived values according to user-defined arithmetic operation between column(s).
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Column labels are tagged by '#label#' in formulas. Use ';' for ',' in functions.
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Numpy is available as np.
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Special variables: #_row_# -- row index
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Examples: (1) magnitude of vector -- "np.linalg.norm(#vec#)" (2) rounded root of row number -- "round(math.sqrt(#_row_#);3)"
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""", version = scriptID)
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parser.add_option('-l','--label',
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dest = 'labels',
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action = 'extend', metavar = '<string LIST>',
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help = '(list of) new column labels')
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parser.add_option('-f','--formula',
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dest = 'formulas',
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action = 'extend', metavar = '<string LIST>',
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help = '(list of) formulas corresponding to labels')
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(options,filenames) = parser.parse_args()
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if options.labels == None or options.formulas == None:
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parser.error('no formulas and/or labels specified.')
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if len(options.labels) != len(options.formulas):
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parser.error('number of labels ({}) and formulas ({}) do not match.'.format(len(options.labels),len(options.formulas)))
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for i in xrange(len(options.formulas)):
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options.formulas[i] = options.formulas[i].replace(';',',')
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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, buffered = False)
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except:
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continue
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table.report_name(scriptName,name)
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# ------------------------------------------ read header -------------------------------------------
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table.head_read()
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# ------------------------------------------ build formulae ----------------------------------------
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specials = { \
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'_row_': 0,
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}
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evaluator = {}
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brokenFormula = {}
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for label,formula in zip(options.labels,options.formulas):
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for column in re.findall(r'#(.+?)#',formula): # loop over column labels in formula
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idx = table.label_index(column)
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dim = table.label_dimension(column)
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if column in specials:
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replacement = 'specials["{}"]'.format(column)
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elif dim == 1: # scalar input
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replacement = 'float(table.data[{}])'.format(idx) # take float value of data column
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elif dim > 1: # multidimensional input (vector, tensor, etc.)
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replacement = 'np.array(table.data[{}:{}],dtype=float)'.format(idx,idx+dim) # use (flat) array representation
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else:
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table.croak('column {} not found...'.format(column))
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brokenFormula[label] = True
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break
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formula = formula.replace('#'+column+'#',replacement)
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if label not in brokenFormula:
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evaluator[label] = formula
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# ------------------------------------------ process data ------------------------------------------
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firstLine = True
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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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specials['_row_'] += 1 # count row
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# ------------------------------------------ calculate one result to get length of labels ---------
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if firstLine:
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firstLine = False
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labelDim = {}
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for label in [x for x in options.labels if x not in set(brokenFormula)]:
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labelDim[label] = np.size(eval(evaluator[label]))
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if labelDim[label] == 0: brokenFormula[label] = True
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# ------------------------------------------ assemble header ---------------------------------------
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if label not in brokenFormula:
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table.labels_append(['{}_{}'.format(i+1,label) for i in xrange(labelDim[label])] if labelDim[label] > 1
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else label)
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table.info_append(scriptID + '\t' + ' '.join(sys.argv[1:]))
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table.head_write()
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# ------------------------------------------ process data ------------------------------------------
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for label in [x for x in options.labels if x not in set(brokenFormula)]:
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table.data_append(unravel(eval(evaluator[label])))
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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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