generalized addGradient with --data instead of --scalar and --vector

PRIVATE

@@ -1 +1 @@
-Subproject commit 2a19f35198e5e1e2f3e4d5a0728ed2667c2075f8
+Subproject commit 3341e5973bda63fe03ace6490dc6b010e188c3f3

processing/post/addGradient.py

@@ -4,6 +4,7 @@
 import os,sys,math
 import numpy as np
 from optparse import OptionParser
+from collections import defaultdict
 import damask
 
 scriptName = os.path.splitext(os.path.basename(__file__))[0]
@@ -22,6 +23,7 @@ def gradFFT(geomdim,field):
  grad_fourier  = np.empty(field_fourier.shape+(3,),'c16')
 
 # differentiation in Fourier space
+# Question: why are grid[0,1,2] normalized by geomdim[2,1,0]??
  TWOPIIMG = 2.0j*math.pi
  k_sk = np.where(np.arange(grid[2])>grid[2]//2,np.arange(grid[2])-grid[2],np.arange(grid[2]))/geomdim[0]
  if grid[2]%2 == 0: k_sk[grid[2]//2] = 0                                                            # for even grid, set Nyquist freq to 0 (Johnson, MIT, 2011)
@@ -47,8 +49,8 @@ def gradFFT(geomdim,field):
 
 parser = OptionParser(option_class=damask.extendableOption, usage='%prog option(s) [ASCIItable(s)]', description = """
 Add column(s) containing gradient of requested column(s).
-Operates on periodic ordered three-dimensional data sets.
+Operates on periodic ordered three-dimensional data sets
-Deals with both vector- and scalar fields.
+of vector and scalar fields.
 
 """, version = scriptID)
 
@@ -56,22 +58,17 @@ parser.add_option('-p','--pos','--periodiccellcenter',
                   dest = 'pos',
                   type = 'string', metavar = 'string',
                   help = 'label of coordinates [%default]')
-parser.add_option('-v','--vector',
+parser.add_option('-d','--data',
-                  dest = 'vector',
+                  dest = 'data',
                   action = 'extend', metavar = '<string LIST>',
-                  help = 'label(s) of vector field values')
+                  help = 'label(s) of field values')
-parser.add_option('-s','--scalar',
-                  dest = 'scalar',
-                  action = 'extend', metavar = '<string LIST>',
-                  help = 'label(s) of scalar field values')
 
 parser.set_defaults(pos = 'pos',
                    )
 
 (options,filenames) = parser.parse_args()
 
-if options.vector is None and options.scalar is None:
+if options.data is None: parser.error('no data column specified.')
-  parser.error('no data column specified.')
 
 # --- loop over input files ------------------------------------------------------------------------
 
@@ -82,30 +79,31 @@ for name in filenames:
   except: continue
   damask.util.report(scriptName,name)
 
-# ------------------------------------------ read header ------------------------------------------
+# --- interpret header ----------------------------------------------------------------------------
 
   table.head_read()
 
-# ------------------------------------------ sanity checks ----------------------------------------
-
-  items = {
-            'scalar': {'dim': 1, 'shape': [1], 'labels':options.scalar, 'active':[], 'column': []},
-            'vector': {'dim': 3, 'shape': [3], 'labels':options.vector, 'active':[], 'column': []},
-          }
-  errors  = []
   remarks = []
-  column = {}
+  errors  = []
+  active = defaultdict(list)
 
-  if table.label_dimension(options.pos) != 3: errors.append('coordinates {} are not a vector.'.format(options.pos))
+  coordDim = table.label_dimension(options.pos)
-  else: colCoord = table.label_index(options.pos)
+  if coordDim != 3:
+    errors.append('coordinates "{}" must be three-dimensional.'.format(options.pos))
+  else: coordCol = table.label_index(options.pos)
 
-  for type, data in items.iteritems():
+  for i,dim in enumerate(table.label_dimension(options.data)):
-    for what in (data['labels'] if data['labels'] is not None else []):
+    me = options.data[i]
-      dim = table.label_dimension(what)
+    if dim == -1:
-      if dim != data['dim']: remarks.append('column {} is not a {}.'.format(what,type))
+      remarks.append('"{}" not found...'.format(me))
-      else:
+    elif dim == 1:
-        items[type]['active'].append(what)
+      active['scalar'].append(me)
-        items[type]['column'].append(table.label_index(what))
+      remarks.append('adding scalar "{}"...'.format(me))
+    elif dim == 3:
+      active['vector'].append(me)
+      remarks.append('adding vector "{}"...'.format(me))
+    else:
+      remarks.append('skipping "{}" of dimension {}...'.format(me,dim))
 
   if remarks != []: damask.util.croak(remarks)
   if errors  != []:
@@ -113,19 +111,20 @@ for name in filenames:
     table.close(dismiss = True)
     continue
 
+
 # ------------------------------------------ assemble header --------------------------------------
 
   table.info_append(scriptID + '\t' + ' '.join(sys.argv[1:]))
-  for type, data in items.iteritems():
+  for type, data in active.iteritems():
-    for label in data['active']:
+    for label in data:
-      table.labels_append(['{}_gradFFT({})'.format(i+1,label) for i in range(3 * data['dim'])])     # extend ASCII header with new labels
+      table.labels_append(['{}_gradFFT({})'.format(i+1,label) for i in range(3*table.label_dimension(label))])     # extend ASCII header with new labels
   table.head_write()
 
 # --------------- figure out size and grid ---------------------------------------------------------
 
   table.data_readArray()
 
-  coords = [np.unique(table.data[:,colCoord+i]) for i in range(3)]
+  coords = [np.unique(table.data[:,coordCol+i]) for i in range(3)]
   mincorner = np.array(map(min,coords))
   maxcorner = np.array(map(max,coords))
   grid   = np.array(map(len,coords),'i')
@@ -135,12 +134,12 @@ for name in filenames:
 # ------------------------------------------ process value field -----------------------------------
 
   stack = [table.data]
-  for type, data in items.iteritems():
+  for type, data in active.iteritems():
-    for i,label in enumerate(data['active']):
+    for i,label in enumerate(data):
       # we need to reverse order here, because x is fastest,ie rightmost, but leftmost in our x,y,z notation
       stack.append(gradFFT(size[::-1],
-                           table.data[:,data['column'][i]:data['column'][i]+data['dim']].
+                           table.data[:,table.label_indexrange(label)].
-                           reshape(grid[::-1].tolist()+data['shape'])))
+                           reshape(grid[::-1].tolist()+[table.label_dimension(label)])))
 
 # ------------------------------------------ output result -----------------------------------------