help Rec104
  ABAQUS reaction force output to MATLAB
  
  Syntax
      #Rec# = Fil2str('*.fil');
      #out# = Rec104(#Rec#)
 
  Description
      Read reaction force output from the results (*.fil) file generated
      from the ABAQUS finite element software. The asterisk (*) is replaced
      by the name of the results file. The record key for reaction force
      output is 104. See section "Results file output format" in ABAQUS
      Analysis User's manual for more details.
      The following options with parameters have to be specified in the
      ABAQUS input file for the results (*.fil) file to be created and to
      contain reaction force results:
          ...
          *FILE FORMAT, ASCII
          *NODE FILE
          RF
          ...
      NOTE: The results file (*.fil) must be placed in the same directory
      with the MATLAB source files in order to be processed.
      
  Input parameters
      #Rec# (string) is an one-row string containing the ASCII code of the
          ABAQUS results (*.fil) file. It is generated by the function
          Fil2str.m.
  
  Output parameters
      #out# ([#n# x #m#]) is a double array containing the attributes of
          the record key 104 as follows:
          Column  1  –  Node number. 
          Column  2  –  First component of reaction force. 
          Column  3  –  Second component of reaction force.
          Column  4  –  Etc
          where #n# is the number of nodes multiplied by the number of
          increments and #m#-1 is the number of reaction forces per node.
          If the results file does not contain the desired output, #out#
          will be an empty array
 
  _________________________________________________________________________
  Copyright (c) 2016
      George Papazafeiropoulos
      Captain, Infrastructure Engineer, Hellenic Air Force
      Civil Engineer, M.Sc., Ph.D. candidate, NTUA
      Email: gpapazafeiropoulos@yahoo.gr
      Website: http://users.ntua.gr/gpapazaf/