-------------------------------------------------------------------------------
	Didger(R) Version 3.03
	   April 2, 2002

    Copyright (c) 2002. Golden Software, Inc.
       All rights reserved.
-------------------------------------------------------------------------------

This document provides supplemental information to the Didger 3 Users Guide 
and contains late-breaking information about Didger 3 features, compatibility, 
and known problems.  Please read this file before installing or launching the 
software.

=================
Table of Contents
=================
- Registration
- System Requirements
- Installing Didger
- Updating Didger
- New Features in Didger 3.0
- Uninstalling Didger
- Sample Files
- Didger.ini Settings and Known Issues and Limitations
- Contacting Golden Software
- Changes and Problem Corrections in Didger 3.03.25
- Changes and Problem Corrections in Didger 3.02.20
- Changes and Problem Corrections in Didger 3.01.15

===================
Registration
===================
Please remember to send in your registration card!  The card is attached to the 
inside front cover of the Didger User's Guide.  Please complete the tear-off 
portion of the card and return it to us by mail or fax.  You may also register 
online at www.goldensoftware.com.  Registering Didger entitles you to free 
technical support, upgrade pricing on future releases of Didger, and the 
Golden Software newsletter.  Please retain the top portion of the card for 
your records as you will need the serial number when contacting technical 
support and when purchasing Didger upgrades.  This information will not be 
redistributed.

===================
System Requirements
===================
- Windows 95, 98, ME, 2000, XP,  NT 4 SP 3 or higher
- 800 X 600 or higher monitor resolution.
- 256 minimum color resolution.
- 5 MB of free disk space in the Windows drive.
- 25 MB of free disk space in the target installation drive.
- 32 MB RAM minimum, 64 MB recommended.

==================
Installing Didger
==================
Golden Software does not recommend installing Didger 3 over any previous 
version of Didger.  Please ensure that you install Didger 3 into a new 
directory.  Didger 3 can co-exist with older versions as long as they are in 
different directories.

Golden Software recommends that all applications be shut down prior
to installing Didger.  

To install Didger 3 under Windows NT 4 or Windows 2000, you need 
to have administrator rights for that computer.

Installing Didger 
-----------------------------
1.  Insert the CD-ROM in the CD-ROM drive.  The install program 
    automatically begins on most computers.  
2.  Choose the Install Didger option from the screen and setup 
    will begin.  

If the installation does not begin automatically, double-click on 
setup.exe.

Troubleshooting Installations
----------------------------------------------
If you are experiencing errors with the installation, please install 
Didger with error logging.  

To create an installation error log:
1. Go to Start | Run.

2. For a local installation, type 
   "[drive letter]:\[path]\setup.exe" /V"/L* [drive letter]:\[path]\D3.log"
  
   Replace the [drive letter] and [path] with a drive letter and path 
   on your computer.  The path to the log file cannot contain spaces.

3. Click OK.  After the installation process terminates, the log file 
   is created in the path you specify.  Please send the log file to 
   technical support along with the installation message text.

================
Updating Didger
================
To update your version of Didger, open the Didger program and select 
Help | Check for Update. 

You can also email your registered Didger 3 serial number to
didgersupport@goldensoftware.com and request to download the full
product update.

Do NOT install a newer FULL version of Didger 3 over a previous version of
Didger 3 (i.e. do not install 3.02 over 3.00.).  This will not update the software.    
If for some reason you need to do a FULL installation of Didger 3, uninstall the 
previous version before installing the updated version.  

============================
New Features in Didger 3.00
============================
-Import a bitmap into a vector project or into a raster project.
-Import a bitmap into a vector project to overlay it with data files or vector files.
-Export selected well log polylines in the LAS format.
-Define the datum for the UTM projection.
-You can specify the centimeters, chains, feet, inches, kilometers, links, meters, 
miles, millimeters, nautical miles, rods, US feet, or yards when exporting projected 
maps.  For example, a State Plane 1927 map can be exported in feet.  You can also export 
a projected map in a raster project in latitude/longitude coordinates.
-Added a Create Post Map option when importing a data file.
-Added a Layer Manager so all layers are visible, easily accessible, and easily edited.
-In vector projects, bitmaps are exported when using the Create Surfer Base Map command. 
-Warp or rectify a bitmap in raster project.
-Convert the projection of a bitmap in a raster project.
-The new Map Collar command allows you to remove topographic map collars in bitmaps in vector projects.
-Define a polygon and use it to clip a bitmap.
-Select up to 256 colors to specify as transparent for a bitmap.
-Reports contain new and enhanced information.
-Use the new Pan tool to move the project around on screen.
-Use the new Zoom Realtime tool to quickly zoom in or out.
-Add a graticule to your vector project.
-Add a grid to your vector project, showing the Cartesian units of the projection.
-There are many new calibration methods.
-There are two new projection types.
-Didger opens with a blank project window.
-Digitize using a GPS unit.
-Show all GPS display and settings.
-View the current elevation with the GPS.
-See the current position of the satellites that are being used for a lock.
-Set the GPS settings, such as the GPS Input Datum.
-Use the Help | Golden Software on the Web command to connect to the Golden Software web site 
to view Golden Software's home page, the Didger page, and FAQs.
-Use the Help | Check for Update command to check for product updates.
-Removed 32.76 inch (83.21 cm) page size limitation.
-Increase and decrease bitmap brightness, contrast, and saturation.

====================
Uninstalling Didger
====================
To uninstall Didger, go to Add/Remove programs in the Control 
Panel.  Select Didger 3 from the list under the Install/Uninstall tab.  
Click the Add/Remove button to uninstall Didger.  Follow the on-screen 
instructions to completely remove the Didger program.

====================
Sample Files
====================
Several sample files are included in the Samples directory.  The samples
include interesting maps and the maps needed for the Tutorial in Chapter 3. 

- Botswana.pjt -- Example of tablet digitizing project and the use of multiple layers.
- Graticule.pjt -- Map of the world in Mercator projection showing a graticule.
- Raster.pjt -- Raster file which has been calibrated with a projection.
- Vector.pjt -- Example of a georeferenced bitmap, a data file, and a vector file 
	      imported into one vector project.
- California.gsb -- Example of a projected boundary file.
- CaliforniaCities.dat -- Example of a data file containing the locations of some 
		     California cities in meters.
- Raster.tif -- Example of a GeoTIFF to use in raster or vector projects.
- tutorial map 1.jpg -- Used for Lesson 1 of the Tutorial in Chapter 3.
- tutorial map 2.pjt -- Used for Lesson 4 of the Tutorial in Chapter 3.
- tutorial map 3.pjt -- Used for Lesson 5 of the Tutorial in Chapter 3.

We are also proud to include an extensive selection of USGS STDS data on the 
Didger CD ROM.  Please review the readme file in the Samples directory on the
installation CD.  The readme file will describe how to prepare the files for
use in Didger and where the sample files are located spatially.

In addition to the USGS STDS data, we have included a comprehensive 
selection of boundary files in GSB format on the Didger CD ROM.  The boundary 
files included are: US city point locations, US states, US counties, 3-digit ZIP 
codes, 5-digit ZIP codes, World countries, and more!

====================================================
Didger.ini Settings and Known Issues and Limitations
====================================================
The following advanced settings can be specified under the [Settings] section 
of Didger.INI.  In general, these settings should not be changed unless there
is a very good reason to do so:

- ErrFlags=147       ;This controls error message display.  The value is the 
                     ;sum of the desired options:
                     ;   1  Display Errors
                     ;   2  Display Warnings
	       	     ;   4  Log errors to a file	
                     ;  16  Display errors in a dialog box
                     ; 128  Beep on errors
                     ; 256  Display Module, File, and Line info

- Windows 95 and 98 have a limit of 16,384 vertices per polygon.  Exceeding this 
  limit results in an error message of "Too many points".  You can set the      
  "DecomposePolygonThreshold" value below 16,384 in the  [Options,GSOGDI] section 
  of the INI file.  Uncomment the DecomposePolygonThreshold line by removing the   
  semicolon and changing the value from 12000 if needed.

- Uncomment the DecomposeMetafilePolygonThreshold option if you are exporting a 
  metafile and receive the "too many points" error.

- Uncomment the DecomposePolygonEdgeQuality option if you experience pixel dropout on
  the edges of polygons.

- Uncomment the ThickLineThreshold option if you have trouble rendering very large 
  polygons and polylines during redraw.  This will speed up the performance of 
  the redraw.

- Most PostScript printer device drivers are NOT 100% Microsoft Windows
  compliant when it comes to imaging complex polygons.  Under rare 
  circumstances this can result in stray lines appearing when they shouldn't.  
  We have worked around this in our software, but the modification makes  
  PostScript printing 3 to 5 times slower.  If you want to speed up PostScript  
  printing, but at the risk of an occasional stray line when printing complex   
  maps, you may do so by placing a semi-colon character (";") in front of the 
  following line in Didger.INI:

     DecomposePrinterPolygons=2

- HP LaserJet 4 problems: 
  When printing on a LaserJet 4 (or 4M non-PostScript), TrueType text blocks 
  can be wider than requested or character spacing can be incorrect.  This has 
  been fixed in version 31.V1.35 of the LaserJet 4 driver.  You can get this 
  driver from Hewlett Packard at www.hp.com. 

  If you are unable to get the new driver, using the LaserJet III driver can 
  resolve problem.

- HP LaserJet Series II and III problems:
  Single characters in the labels, titles, and text blocks may not 
  print with some drivers.  In the Control Panel | Printers menu, select the
  printer, and choose Printer | Properties.  Turn on the option to "Print 
  TrueType as Graphics" to solve the problem.

- HP DeskJet problems:
  The last character in text strings may not print.  In the Didger.ini file 
  remove the semi-colon from the beginning of the line listed below:

     [GSIMAGE]
     ;Windows Picture:Printer:Text=0x8000

  Save the changes, then restart Didger.

- Video Problems:
  On some video cards (ATI & Trident), the last character in text blocks is not 
  displayed; however, printing does not seem to be affected.

  Solution 1: Remove the semi-colon from the beginning of the line listed below
              in the Didger.ini file:
      
              [GSIMAGE]
              ;Windows Picture:Window:Text=0x8000

              Save the changes, then restart Didger.

  Solution 2: Change video driver to use "plain" VGA.

- Printing Calibration Markers.  If you would like to print the calibration markers, 
shown on the screen.  Change the value to 1 for the line listed in the [Settings] section. 
Print Calib Marker=0;

- Raster Calibration Grid Movement:  When calibrating raster projects, 
the default behavoir is to move to the next row, once the calibration point 
has been digitized.  To change the the process back to the Didger 2 behavoir, 
change the value on the following row in the [Settings] section to 0.  Move Row=1;

==========================
Contacting Golden Software
==========================
Please report Didger problems to Golden Software at:

   Golden Software, Inc.
   809 14th Street
   Golden, CO 80401-1866 USA

   phone: 303-279-1021
   fax: 303-279-0909
   e-mail: didgersupport@goldensoftware.com
   web: http://www.goldensoftware.com

Golden Software business hours are 8:00AM to 5:00PM Mountain Time 
Monday through Friday (excluding major U.S. holidays).

Check the Golden Software web page for FAQ's and for additional information 
about our products.

=================================================
Changes and Problem Corrections in Didger 3.03.25
=================================================
- [Fixed] The replicate layer command would incorrectly create a new layer during the process.  The
command also failed to offer an undo operation for the process.
- [Fixed] Uncalibrated raster projects would not properly export some objects.
- [Updated] The data import has an enhanced engine for parsing various data formats correctly.
- [Fixed] When editing a point object with the coordinate manager, the label position would not properly update.
- [Updated] Didger now properly specifies the correct NAD datum for all State Plane coordinate systems.  
Previous versions used the correct ellipsoid values, but did not specify any datum transformation parameters.  
Didger currently uses NAD27 or NAD83 Molodensky datum definitions.
- [Fixed] If you import a BLN, BNA, GSI, MIF, or SHP file into Didger 3 that contains only one point you get 
a Didger Internal Error.
- [Fixed] Didger would crash when using the copy option under Windows 98.  The key was the project having
a very large number of objects and the system could not allocate enough memory to perform the whole operation.  
Didger will not issue a warning indicaing out of memory.
- [Fixed] If a layer is set to uneditable in the Layer Manager, and then right-click on that layer, you can still 
choose "Select All Items on Layer" and then delete those items. 
- [Fixed] Scan Image Dialog in the Select New Project dialog was showing up way down on the list.
- [Fixed] Didger crashes after invoking the Cancel button in the Digitize Polylines dialog box.  
The key to reproducing the error is having some labels selected for the polyline objects.
- [Fixed] Didger was not properly specifying the project limits when importing a State Plane Coordinate system.
- [Updated] Updated the GSB export filter to correctly export all projection information.
- [Updated] Improved the import filter to properly render and import text objects in the GSI file format.  
Some text objects would be converted to the incorrect size and proportion.
- [Fixed] An error would occur in Didger if the line style would have a very large value for one of the dashes 
or blank spaces.
- [Fixed] Didger would not properly import an attribute id if an previous attribute was empty.
- [Fixed] Didger would incorrectly import data attributes 3 and 4 for data files.  The whole data import process 
would not properly import data attributes, except under the most simple of operations.
- [Updated] Removed the ability to export a raster file in a raster project to a dimension greater than 
32,767 pixels. We cannot support export images of this size.
- [Fixed] The GSPROJ subsystem has been updated to correct problems reading and writing 
Blue Marble RSF files with single quotes delimiting coordinate names.  
- [Fixed] The .GSI import filter has been updated to retrieve the correct bounding 
box from the file header.  The .GSI export filter was already modified 
recently to fix a bug writing an incorrect bounding box to the file header.
- [Fixed] The DXF import filter has been updated to correct a problem with text 
heights.  The symptom reported was that creating a drawing with two text 
objects of the same height, exporting to DXF, and reimporting the DXF 
resulted in a drawing with two text objects differing in height.  
- [Fixed] Didger would crash with the File Info dialog open during the importing of raster files into 
vector projects.
- [Fixed] Convert Image Projection would create a black bitmap if the input datum was set to user defined.
- [Fixed] Create Surfer Base Map would invoke an error if a layer was set to invisible.
- [Updated] The DXF import filter has been updated to prevent extremely small text objects from importing 
with zero height.  
- [Updated]  The ESRI E00 import filter has been updated to correct the problem reported, wherein small 
text objects were being imported with zero height.  
- [Updated]  The import filter for MapInfo Interchange Format (MIF) has been 
updated.  It now supports importing of projection and datum information 
from MIF files.
- [Updated]  The GSPROJ subsystem has been updated.  It now includes support for the 
Australian GDA-94 datum and the ITRF-90 datum.

=================================================
Changes and Problem Corrections in Didger 3.02.20
=================================================
- [Fixed] Didger would not properly create new layers in a project when previous layers were deleted.
This could result in duplicate layer objects with different names.
- [Fixed] The BNA export filter would add an additional point to the end of a polygon object which prevent
the BNA import filter from properly importing the file.
- [Fixed] Didger would not properly import GeoTIFF files with user defined datums.
- [Fixed] User defined datums would not be preserved between projection changes.
- [Updated] Updated a number of short cut keys in the Data Attribute View to eliminate duplicates.
- [Fixed] If a user selected multiple text objects and modified the font information, the text would disappear.
- [Fixed] Spline Smoothing would invoke an internal error if the object was previously thinned to three equal points.
- [Fixed] Some MIF and E00 files would not properly import text objects and display them correctly.
- [Fixed] Bitmap Shifts Up When Clip Map Collar after Select Transparent Colors.
- [Updated] GeoTIFF export will now create the proper scaling values.  This will allow GSI GeoTIFF files
to be imported into other GIS applications. 
- [Fixed] The prime meridian shift parameter was not being taken 
into account during Molodensky or Bursa-Wolfe datum conversions.  
- [Fixed] The Add Layer undo operation would get out of sync with the undo system when additional layer 
operations were added prior to undoing the undo operation.
- [Fixed] Didger was not properly importing line widths for GSI and DXF files.  
- [Fixed] Objects were not being correctly added to the right layer when new layers were added after initial 
layers were created with digitized objects.
- [Fixed] Corrected the undo system to properly reorder drawing objects when an undo move layer process was invoked.
- [Updated] Modified the way Didger calculates object bounding boxes when calculating project extents.
- [Fixed] Didger would not properly import or export projection scaling information.
- [Updated] Modified all web links in the application to reflect the current GSI web structure.
=================================================
Changes and Problem Corrections in Didger 3.01.15
=================================================
- [Fixed] The projection library would issue a divide by zero error in the Lambert Conformal Conic projection.
- [Fixed] Didger would not properly create a new layer when the user would select the "Add Layer" option 
in the Layer Manger window.  The first two layers would be created correctly, but new layers 
would be duplicates of Layer 2.
- [Fixed] LAS file export would not write out the Curve Type info to a file.
- [Updated] Modified the code to update snap and weed tolerance values when the exceed the project limits.  
Under certain circumstances the user could modify the project settings that would have an adverse 
effect on the tolerance settings.
- [Fixed] Updated the code to properly export all polyline and polygon objects during 
the Create Surfer Base Map command.
- [Fixed] Created code to properly detect vector files that have invalid project limits and disable 
importing those files into a Didger project.
- [Updated] Added code to disable showing the checkbox for GPS Enabled when the GPS was not 
enabled due to various errors.
- [Fixed] Modified vertex averaging thinning method to properly specify both the correct 
start and end node world coordinate value. 
- [Updated] Added code in the Spline Thinning routines to prevent ever thin lines that have all 
nodes at the exact same location.
- [Fixed] Didger 3 would not properly open uncalibrated Didger 2 raster project files.



[End of Didger 3 README.TXT]