Topic:
What does Option #72: 2D General Data Manager do?

Description:

Solution:
This option allows the user to manage certain kinds of 2D data and to generate
reports.

1.) Generate a report on surveys or lines with the options of specifying format
    and output destination.  Formats can be short, long, or navigation.

2.) Generate or delete line ties.  This can take a long time and should not be
    interupted.

3.) Delete location information from selected lines.

4.) Print (display to screen) a list of selected surveys and lines.

5.) Change degree of tolerance to a user-defined value.  The default tolerance
    is 0.5.  The range of values is 0.0 - 0.5 with up to 7 decimal places.  The
    default is an issue when the line is always turning slowly in the same
    direction; in this case, the straight-line representation deteriorates with
    distance from the first loaded point.  When navigation is loaded into an
    IESX project, it is filtered to remove points that may lie along a straight
    line. Two separate checks are made to see if the line is straight; if either
    of the following equations is true, the point is seen as a turning point.
    Two separate checks are made to see if the line is straight; one is the
    filter tolerance and the other is the distance between the first and last
    point that reaches a 100 (hard coded value) feet or meters, then a new line
    is drawn. Mostly a problem with metric projects.

6.) Action #15 Fix bad j values for 2d_lines was added in IESX_UTIL version 
    10.2.1. This problem occurred when there were missing CDPs on the original
    SEGY file/tape and the CDPs were padded (integrity check set to CDP) when
    loading the seismic. This option repairs offending 2D lines that were loaded
    in IESX 10.0/10.1. The loading problem was corrected in IESX 10.2. 
 
Examples of results of bad "j" values for 2D lines include: 
 
     - A roll to the bad line from another line in the same 2D survey causes
      half the seismic to appear as null traces. 
     - You are unable to export interpretation; the log file says "Bad 2d line."
     - You are unable to run Computation Manager on these "bad" lines. The error 
       is "Bad survey extent." 

PROCEDURE:

1.) Option #1 - Initialize access to data area
   - Enter the project name and password
   - Enter #1 to access exploration data area type

2.) Option #72 - 2D General data manager

Select lines or actions:
 
 Lines                                       Actions
 
 0 - Select format of report                 10 - Generate report
 1 - Select destination of output            11 - Change tolerance
 2 - Select survey                           12 - Delete location information
 3 - Select lines                            13 - Generate line ties
 4 - Print selected lists                    14 - Delete line ties
 5 - Delete from selected lists              15 - Fix bad j values for 2d_lines
99 - Terminate 2D reporting


3.) Option #2 - Terminate access to the data area

4.) Option #99 - Exit IESX_Utilities






Last Modified on: 23-NOV-98