UNITED STATES DEPARTMENT OF THE INTERIOR
     
                             GEOLOGICAL SURVEY
     
     
     
     
     
     
     GSMGIS: A program to import and/or export data between GSMAP data
        ARC/INFO, GRASS, IDRISI, EarthVision, GIV, Rockware STEREO, 
                               and MAPINFO.
     
     
                                    By
     
       Gary I. Selner (1), Gregory N. Green (2), and J. D. Hoffman (3)
     
     
     
     
     
                             Open-File Report
                                  95-570
     
                                DISCLAIMER
     
     This report is preliminary and has not been reviewed for 
     conformity with U.S. Geological Survey editorial standards.  
     
     Although program tests have been made, no guarantee (expressed or 
     implied) is made by the authors or the U.S. Geological Survey 
     regarding program correctness, accuracy, or proper execution on 
     all computer systems.
     ----------------------------------------------------------------
     Any use of trade names is for descriptive purposes only and does 
     not imply endorsement by the U.S. Geological Survey.  This report 
     is preliminary and has not been reviewed for conformity with the 
     U.S. Geological Survey editorial standards.
     
     (1) U.S. Geological Survey, DFC, Box 25046, MS 905, 
         Denver, CO 80225
     (2) U.S. Geological Survey, DFC, Box 25046, MS 905, 
         Denver, CO 80225
     (3) U.S. Geological Survey, DFC, Box 25046, MS 973, 
         Denver, CO 80225
     
                             Denver, Colorado
                              October, 1995
     
                            
     
                            SYSTEM REQUIREMENTS
     
     The program described in this document executes on IBM-PC
     compatible microcomputers using the MS-DOS operating system,
     version 2.0 or higher.  The microcomputer must have at least 640K
     RAM and, as a matter of practicality, a fixed disk drive.  A math
     co-processor is recommended.   A text editing program capable of
     producing ASCII files is also required.  GSMGIS was compiled with
     a Microsoft QuickBASIC Compiler, Release 4.00b.  The program was
     tested on a Gateway 486 microcomputer running MS-DOS Version 5.0
     and a Gateway P5-90 microcomputer running MS-DOS Version 6.22.  
     
                           CONTENTS OF THE RELEASE DISK
     
     The release disk contains the following files:
     
     README.1ST     Microcomputer system requirements, release disk   
                    contents, instructions for installing the GSMGIS   
                    program , and instructions for printing the        
                    documentation on the release disk (this file)
     GSMGIS.ASC     Documentation for GSMGIS (ASCII file)
     APP_A.ASC      Map projections (information and examples)
     APP_B.ASC      REFRMDLG example run
     APP_C.ASC      Summary table of major-minor codes for
                    1:2,000,000-scale Digital Line Graphs
     APP_D.ASC      Summary table of major-minor codes for
                    1:100,000-scale Digital Line Graphs
     APP_E.ASC      Summary table of major-minor codes for
                    1:24,000-scale Digital Line Graphs
     GSMGIS.EXE     The GSMGIS program
     REFRMDLG.EXE   Program for reformatting DLG files without
                    record delimiters

                               INSTALLATION
     
     Copy the file GSMGIS.EXE from the release disk into a
     subdirectory of your choice on your fixed disk drive.  
                            
                    
                    PRINTING THE DOCUMENTATION FILES
     
     The files ending with the .ASC extension are all ASCII files which
     you can print directly.  Do this by:
     
     COPY <file> PRN
     
     where <file> is the name of the file from the above list you wish
     to print.  You may wish instead to import these ASCII files into a
     word processing program, reformat the files as desired, and then
     print them.