README.TXT                                              June 25, 2008

                            Model Viewer

          A Program For Three-Dimensional Visualization of 
                     Ground-water Model Results 

                             Version 1.2


                                 for
                   Windows Vista, XP, 2000, NT 4.0, 98, 95


                          TABLE OF CONTENTS

                          A. SYSTEM REQUIREMENTS
                          B. DISTRIBUTION FILE
                          C. DOCUMENTATION
                          D. INSTALLING
                          E. RUNNING THE SOFTWARE
                          F. UNINSTALLING
                          G. REVISION HISTORY


A. SYSTEM REQUIREMENTS

To installation and run the software, the following are necessary:

  - Windows Vistas, XP, 2000, NT 4.0, 98, 95
  - A minimum processor speed of 300 Megahertz
  - A minimum of 64 Megabytes of Random Access Memory (RAM). Memory 
    requirement depends on the model size. A large model may require
    several hundred Megabytes.
  - A monitor with at least 16-bit color depth. 24-bit color is 
    recommended.
  - The responsiveness of the program to user interaction increases 
    with the speed of the graphics board. A graphics board with OpenGL 
    acceleration is highly recommended.
  - The program requires 10 Megabytes of hard disk space.


B. DISTRIBUTION FILE

The following distribution file is currently available:

  modview1_2.exe  - for Windows Vistas, XP, 2000, NT 4.0, 98, 95


C. DOCUMENTATION

Hsieh, P.A., and Winston, R.B., 2002, User’s Guide To Model Viewer, 
A Program For Three-Dimensional Visualization of Ground-water Model 
Results: U.S. Geological Survey Open-File Report 02-106, 18 p. 

A PDF version of this report is included with the software distribution.
Please note that this report was released with Model Viewer version 1.0.
Users should refer to the online help pages for instructions on how to
use Model Viewer version 1.1.


D. INSTALLING

To install the software, double-click modview1_1.exe. This will
execute the installation program. Follow the directions on 
the screen.

By default, the software is installed in the directory
C:\Program Files\USGS\Model Viewer 1.2.  This is the recommended installation 
directory, but you may use other directories or disk drives.


E. RUNNING THE SOFTWARE

After installation as described above, the software can be run 
as follows:

1. Click the "Start" button
2. Select "Programs"
3. Select "Model Viewer 1.2"
4. Select "Model Viewer"


F. UNINSTALLING

The following procedure is used to uninstall the software:

1. Click the "Start" menu, then click "Settings", and finally 
   click "Control Panel". The Control Panel is displayed.
2. Double Click on "Add/Remove Programs". 
   The "Add/Remove Programs Properties" dialog box is displayed.
3. From the list of installed programs, select "Model Viewer 1.2".
4. Click "Add/Remove". Windows will uninstall the application.

G. REVISION HISTORY
Version 1.0	Nov. 4, 2002	Initial Release

Version 1.1	Oct. 7, 2003	A line drawing contained in an ESRI Shapefile or a DXF file may be displayed on the top surface of the model grid or on a flat plane above the model grid. 
Display of particle locations in MODFLOW-2000 GWT and MOC3D 
Support the final release of SUTRA version 2D3D.1. The beta version of this model is no longer supported. 
A number of bugs in Model Viewer 1.1 has been fixed.

Version 1.2	June 25, 2008	Support for PHAST has been added. 
Support for _SOS files produce by UCODE-2005 has been added. 
Support for SUTRA 2.1 has been added. 
Several bugs in Model Viewer 1.1 have been fixed.