Topic:
How to quickly delete undesired log values.

Description:
I want to automatically eliminate log values which are obviously too large 
or too small.  How can I do this?

Solution:
There are three methods to do this. The first method is single curve, methods
two and three allow up to eight curves to be choosen at a time.

1.) LPView > Log Preparation #2 > Environ. Correction #2 > Range Limiting #3

    a.) Parameters #1 > set the beginning depth and end depth, set lower and
         upper curve limit > then set to 'include' or 'exclude' the range limit
         choice.

    b.) Change Curves #2 > Choose the curve to be operated on. Single curve
         only.

    c.) To compute hit > Compute/Display #3 > This will graphically display the
         before edit and after edit curve > Save Data #5 > to save and store the
         edited curve. Quit #6 > to exit edit without saving the edited curves.

2.) LPView > Log Preparation #2 > Edit Log #1 > Graphic Edit #1 

    a.) Change Edit Function #3 > Range Limit #7

    b.) Choose Curve Set #1 > Choose log or logs to edit, up to eight.
         Note: The first curve displayed in the edit window is a guide curve
         only. It is not an editable curve, so only seven curves are editable.

    c.) Click MB1 on Restore/Edit Curves #4 > This will display the curves to
         the screen > To edit you have two options from this point; 1.) MB1 on 
         Edit/Range Limit #1 > Using MB1 to digitize over the portion of log you 
         want edited > it applies either a NIL value or replacement value.

        What is applied during this edit is set in Parameters #5 > Parameters #1
         MB1 digitizes points in > MB3 brings up the popup window which allows
         you to 'break' to edit multiple portions of the log, 'exit' to complete
         the edit, 'quit' to quit the edit without doing any editing, and 'Del.
         All' to delete all edits to start over.

    d.) Once you have made your edits > Apply Correction #6 > Save Curves #2 > 
         Choose curves to save > Save Data #1 > hit return to right the edited 
         curve > the original log curve will have "Range Limit:" appended to
         it, it won't over write the original curve. If a "Range Limit" curve
         exists you will get prompted to to either overwrite or give a new name
         to the edited log curve.

3.) LPView > Log Preparation #2 > Edit Log #1 > Keyboard Edit #2

    a.) When you click MB1 on Keyboard Edit #2 you will recieve a menu with 14
         options. Option '11' allows you to enter a depth top and bottom zone
         to apply a NIL value to this zone. Only one edit zone and one log at a
         time. NIL #11 > Parameters #1 (set top & bottom zones) > Change Curves
         #2 (Choose curve to edit) > Compute/Display #3 (graphical display) > 
         Save Data #5 > Save Data #1. See above for save procedures.

         





Last Modified on: 25-NOV-98