GCLAS

              Graphical Constituent Loading Analysis System

                     GCLAS - Version 2.4.1 2023/06/05


Instructions for installation and execution are provided below.
After installation, see the readme.txt file in the doc subdirectory of
the GCLAS installation directory for summary information on GCLAS.

For assistance, enhancement requests, or to report bugs, send e-mail to
gs-w_help_gclas@usgs.gov.


                          TABLE OF CONTENTS

                          A. SYSTEM REQUIREMENTS
                          B. DISTRIBUTION FILE
                          C. DOCUMENTATION
                          D. INSTALLING
                              o Installing GCLAS
                              o GCLAS directory structure
                          E. RUNNING THE SOFTWARE
                          F. UNINSTALLING GCLAS
                          G. CONTACTS

A. SYSTEM REQUIREMENTS

A Java Runtime Environment (JRE) is required to install and run
GCLAS. Version 8 or higher is recommended. The latest open-source 
implementation of the JRE for Linux and Microsoft Windows platforms can 
be downloaded from https://adoptium.net.

GCLAS should run on most computers running the Windows operating 
system.
 
B. DISTRIBUTION FILE

The following distribution package (containing the software and
information files) is currently available for Windows systems:
  
  gclas_install_2_4_1.jar

C. DOCUMENTATION

A help manual can be displayed by selecting "Help Topics"
from the GCLAS Help menu. A user's manual can be is available on the
Web at http://pubs.usgs.gov/tm/2006/tm4C1/.

D. INSTALLING

Installing GCLAS
----------------

On Windows, the installer request administrative rights if the user doing
the install is not an administrator.

To install the software, double-click gclas_install_2_4_1.jar to execute
the installation program and follow the directions on the screen. If the
installation program does not start when double-clicked, open a command 
window in the directory that contains gclas_install_2_4_1.jar and then type:

java -jar gclas_install_2_4_1.jar

Follow the installer's instructions to complete the installation.

By default, the software is installed in the directory
C:\Program Files\USGS\gclas2.4.1.  This is the recommended installation 
directory, but you may use other directories or disk drives.

GCLAS directory structure
-------------------------

The following directory structure will be created (the contents of each
directory are shown to the right):

   gclas2.4.1                       files NOTICE.TXT and this README.TXT
     `-----bin                      script to run GCLAS
     `-----data                     example input data
     `-----config                   help and parameter definition files
     `-----dist                     GCLAS executable and required libraries
     `-----user                     potential working directory for user
     `-----resources                image files used by GCLAS
     `-----Uninstall                uninstaller for GCLAS

E. RUNNING THE SOFTWARE

Select the GCLAS shortcut from the Start menu to execute GCLAS.  
See the GETTING STARTED text in the upper right-hand panel of the
GCLAS window and the on-line help for assistance with using GCLAS.

Users with multiple JRE installations should note that the batch
file executed by the GCLAS shortcuts will execute the first java version
found by the operating system.  To execute a different java version,
uncomment and modify as appropriate the lines containing the jrehome
variable in the batch file that executes GCLAS.

F. UNINSTALLING GCLAS

To uninstall GCLAS, open a command prompt window (as administrator if
permissions require) and type:

java -jar C:\Program Files\USGS\gclas2.4.1\Uninstall\uninstall.jar

and follow the prompts. If GCLAS was not installed in the default location,
substitute the correct path to the Uninstall directory.

G. CONTACTS

Inquiries about this software distribution should be directed to:

gs-w_help_gclas@usgs.gov