Added backward compatibility

src/JuliaFEM.jl

@@ -128,7 +128,8 @@ module Preprocess
 include("preprocess.jl")
 export create_elements, Mesh, add_node!, add_nodes!, add_element!,
        add_elements!, add_element_to_element_set!, add_node_to_node_set!,
-       find_nearest_nodes, reorder_element_connectivity!, create_node_set_from_element_set!
+       find_nearest_nodes, find_nearest_node, reorder_element_connectivity!,
+       create_node_set_from_element_set!
 include("preprocess_abaqus_reader.jl")
 export parse_abaqus, parse_section, parse_element_section,
        abaqus_read_mesh, abaqus_read_model

src/preprocess.jl

@@ -63,6 +63,10 @@ function create_node_set_from_element_set!(mesh::Mesh, set_names::String...)
     return
 end
 
+function create_node_set_from_element_set!(mesh::Mesh, set_name::Symbol)
+    create_node_set_from_element_set!(mesh, string(set_name))
+end
+
 function add_element!(mesh::Mesh, elid::Int, eltype::Symbol, connectivity::Vector{Int})
     mesh.elements[elid] = connectivity
     mesh.element_types[elid] = eltype
@@ -160,12 +164,13 @@ function find_nearest_nodes(mesh::Mesh, coords::Vector{Float64}, npts::Int=1; no
     s = sort(collect(dist), by=x->x[2])
     nd = s[1:npts] # [(id1, dist1), (id2, dist2), ..., (id_npts, dist_npts)]
     node_ids = [n[1] for n in nd]
-    if length(node_ids) == 1
-        return first(node_ids)
-    end
     return node_ids
 end
 
+function find_nearest_node(mesh::Mesh, coords::Vector{Float64}; node_set=nothing)
+    return first(find_nearest_nodes(mesh, coords, 1; node_set=node_set))
+end
+
 """
 Apply new node ordering to elements. In JuliaFEM same node ordering is used
 than in ABAQUS and if mesh is parsed from FEM format with other node ordering

test/test_preprocess.jl

@@ -39,8 +39,8 @@ end
     mesh = aster_read_mesh(meshfile)
     create_node_set_from_element_set!(mesh, "LOWER_LEFT", "UPPER_BOTTOM")
     # nid 1 coords = (0.0, 0.5), nid 13 coords = (0.0, 0.5)
-    nid = find_nearest_nodes(mesh, [0.0, 0.5]; node_set="LOWER_LEFT")
+    nid = find_nearest_node(mesh, [0.0, 0.5]; node_set="LOWER_LEFT")
     @test first(nid) == 1
-    nid = find_nearest_nodes(mesh, [0.0, 0.5]; node_set="UPPER_BOTTOM")
+    nid = find_nearest_node(mesh, [0.0, 0.5]; node_set="UPPER_BOTTOM")
     @test first(nid) == 13
 end