THE GCARS SYSTEM FORTRAN IV PROGRAMMERS MANUAL-PART B PROGRAMS FOR GENERATION OF ALTERNATIVES

COMPUTER ROUTINES ARE PRESENTED IN THIS PROGRAMMERS MANUAL TO PERFORM THE DEVELOPMENT AND TESTING OF VALUE SURFACES IN ANALYZING A SERIES OF ROUTE-INDEPENDENT HIGHWAY LOCATION FACTORS. THE VALUE SURFACE REPRESENTS THE POTENTIAL COSTS OR BENEFITS ASSOCIATED WITH THE PARTICULAR LOCATION FACTOR. THE GENERATION OF ALTERNATIVES INVOLVES THE FOLLOWING STEPS: (1) CONVERT VALUE MATRICES TO UTILITY MATRICES, (2) IF MULTIPLE FACTORS ARE BEING ANALYZED, COMBINE THE APPROPRIATE UTILITY MATRICES, EACH MULTIPLIED BY A SELECTED WEIGHTING FACTOR, TO PRODUCE A COMBINED UTILITY MATRIX, (3) DEVELOP A NETWORK OF LINKS JOINING ADJACENT MODES ON THE UTILITY MATRIX SO THAT ROUTES CAN BE SELECTED ACROSS THE AREA, AND (4) GENERATE A SERIES OF ALTERNATIVES BY REPEATED MINIMUM PATH ANALYSIS TO THE NETWORK. ROUTINES ARE PRESENTED FOR PROJECT NETSUM WHICH ACCEPTS VALUE MATRICES, CONVERTS THEM TO UTILITY MATRICES, AND COMBINES THEM IN SPECIFIED RATIOS TO PRODUCE A COMBINED UTILITY MATRIX. SUBROUTINE MPATH PERFORMS THE REPEATED MINIMUM PATH ANALYSIS TO GENERATE A SPECIFIED NUMBER OF ALTERNATIVES. SUBROUTINE PRTOUT IS THE OUTPUT ROUTINE WHICH PREPARES PRINTED OUTPUT FOR NETSUM AND MPATH. SUBROUTINE PATHS PRODUCES A MAP OF THE GENERATED ALTERNATIVES ON THE PRINTER. A SIMPLIFIED FLOW CHART PRESENTS THE TRANSFER OF CONTROL BETWEEN THE ROUTINES DURING THE ANALYSIS.

  • Supplemental Notes:
    • No 26, 59 PP, 11 FIG, 2 APP, 8 REF
  • Corporate Authors:

    Purdue University/Indiana Department of Transportation JHRP

    Purdue University, School of Civil Engineering
    West Lafayette, IN  United States  47907-1284
  • Authors:
    • Turner, A K
  • Publication Date: 1969-9

Subject/Index Terms

Filing Info

  • Accession Number: 00203438
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Dec 29 1994 12:00AM