Is Node in Node Selection?

Can an IFM find out whether a node is in a Node Selection group?

I'm hoping to use similar call backs to the RefDist callbacks to get Node Selection names and then run processes on nodes that are in certain selections.

Yes, there's IfmSelectionItemIsSet(pDoc, IfmSEL_NODAL, i, j). You might want to use it in combination with IfmGetNumberOfSelections(pDoc, IfmSEL_NODAL) and IfmGetSelectionName(pDoc, IfmSEL_NODAL, i) to identify a node selection by its name.

Please find a snippet below illustrating the usage. The script has not been carefully tested. Accordingly, I cannot give any warranty that the script is working properly.

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import sys, os
sys.path.append('C:\\Program Files\\DHI\\2017\\FEFLOW 7.1\\bin64')
import ifm

try:
    def no_selection(n_selections):
        assert (n_selections != 0),"No selections are available"

    cwd = os.getcwd()
    FEM_FILE_in = cwd + "\\..\\femdata\\box.fem"
    FEM_FILE_out = cwd + "\\..\\femdata\\box_out.fem"


    doc = ifm.loadDocument(FEM_FILE_in)
    sel_type=1 # nodal=0, elemental=1
    n_selections = doc.getNumberOfSelections(sel_type)
    n_elements = doc.getNumberOfElements()
    n_dimensions=doc.getNumberOfDimensions()
    new_selection_id = 0

    if n_selections == 0:
        print no_selection(n_selections)

    print "FEM_FILE in: " + FEM_FILE_in
    print "FEM_FILE in: " + FEM_FILE_out
    print "Number of selections: " + str(n_selections)
    print "Available selections:"
    for selection in range(0,n_selections-1):
        print " ", doc.getSelectionName(sel_type,selection)

    selection_members_list_all = []

    for selection in range(0, n_selections):
        selection_members_list_current = []
        for element_id in range(0, n_elements):

            if doc.selectionItemIsSet(sel_type, selection, element_id) == 1:
                selection_members_list_current.append(element_id)

        selection_members_list_all.append(selection_members_list_current)

    # Make selection sets
    selection_set_list = []
    for i in range(0, n_selections):
        selection_set_list.append(set(selection_members_list_all[i]))

    # Intersect two selections
    for selection in range(0,n_selections-1):

        name_new_selection = "INTERSECT_" + str(doc.getSelectionName(sel_type, selection)) + "_" + str(doc.getSelectionName(sel_type, selection + 1))
        doc.createSelection(sel_type, name_new_selection)
        selection_members_list_current =  list(selection_set_list[selection].intersection(selection_set_list[selection+1]))

        new_selection_id = doc.findSelection(sel_type, name_new_selection)

        for element in range(0, n_elements):
            if element in selection_members_list_current:
                doc.setSelectionItem(sel_type, new_selection_id, element)

    # Union two selections
    for selection in range(0, n_selections - 1):

        name_new_selection = "UNION_" + str(doc.getSelectionName(sel_type, selection)) + "_" + str(doc.getSelectionName(sel_type, selection + 1))
        doc.createSelection(sel_type, name_new_selection)
        selection_members_list_current = list(selection_set_list[selection].union(selection_set_list[selection + 1]))

        new_selection_id = doc.findSelection(sel_type, name_new_selection)

        for element in range(0, n_elements):
            if element in selection_members_list_current:
                doc.setSelectionItem(sel_type, new_selection_id, element)

    # Difference between selection i and i-1
    for selection in range(0, n_selections - 1):

        name_new_selection = "DIFFERENCE_" + str(doc.getSelectionName(sel_type, selection)) + "_" + str(doc.getSelectionName(sel_type, selection + 1))
        doc.createSelection(sel_type, name_new_selection)
        selection_members_list_current = list(
            selection_set_list[selection].difference(selection_set_list[selection + 1]))

        new_selection_id = doc.findSelection(sel_type, name_new_selection)

        for element in range(0, n_elements):
            if element in selection_members_list_current:
                doc.setSelectionItem(sel_type, new_selection_id, element)

    # Symmetric difference of two selections in two directions
    for selection in range(0, n_selections - 1):

        name_new_selection = "SYMMETRIC_DIFFERENCE_" + str(doc.getSelectionName(sel_type, selection)) + "_" + str(
            doc.getSelectionName(sel_type, selection + 1))
        doc.createSelection(sel_type, name_new_selection)
        selection_members_list_current = list(
            selection_set_list[selection].symmetric_difference(selection_set_list[selection + 1]))

        new_selection_id = doc.findSelection(sel_type, name_new_selection)

        for element in range(0, n_elements):
            if element in selection_members_list_current:
                doc.setSelectionItem(sel_type, new_selection_id, element)

    # Save new fem file with new selection sets
    doc.saveDocument(FEM_FILE_out)

except Exception as err:
print >> sys.stderr, 'Error: ' + str(err) + '!'
sys.exit(-1);
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