About the MEGS_Log configuration file

Customisation of MEGS_Log is carried out by editing the MegsLogConfig.txt file. This is a plain text file installed in the MEGS_Log program files directory (by default C:\Program files\MEGMS\MEGS_Log) that can be edited using a program such as Notepad. You may need to be an administrator of the local computer in order to edit this file.

The first line of the config file must be the line Megslog Configuration v3. Subsequent lines that start with a # are comments. Case is not significant, however the case used in the configuration file will be preserved for items that are displayed within MEGS_Log.

The config file is broken up into a number of sections. Each section starts with the section name, and is delimited by curly braces {}. Each section customises a particular aspect of MEGS_Log. There is no prescribed order, however some sections that contain definitions of items that are used by later sections need to appear first.

• The Bitmaps section defines the names of the bitmaps that can be used when drawing the borehole graphics and either the data for each bitmap (for monocoloured bitmaps) or the name of file that contains the data for each bitmap (for other bitmaps).
• The Vectors section defines the names and the appearance of the vector based hatches that can be used when drawing borehole graphics.
• The Definitions section defines the name of each rock type and the bitmap or vector to use when drawing the rock type.
• The Correlations section defines the name of each site and the seam and ply names that are valid at that site.
• The Traces section provides default display settings for LAS traces, such their colour, display field and display range.
• The SchemaDefinitions section lists the type and order in which data fields appear when loading and saving boreholes.

When MEGS_Log is started it looks for the config file in the following places in order:

• (Client mode excepted) in the MEGMS\MEGS_Log 3.0 sub-directory of the current users application data directory (%APPDATA%\MEGMS\MEGS_Log 3.0). On Windows 2000 and Windows XP the application data directory is is typically C:\Documents and Settings\username\Application Data, on Windows Vista it is typically C:\Users\username\AppData\Roaming, however the location of these directories may vary depending on your Windows installation. (This location is shared with MEGS_Log 3.0).
• In the same directory as the MEGS_Log executable file (MEGS_Log.exe). For a typical installation this directory is C:\Program Files\MEGMS\MEGS_Log 3.3. During installation a default configuration file is copied into this directory.

You can edit the configuration file by clicking the Edit configuration file buttion on the Settings tab of the Options dialog box. This command edits the copy of the configuration file in the users application data directory. If the configuration file is not in that directory then the configuration file from the same directory as the MEGS_Log executable is first copied across.

The user's application data directory is the recommended directory for user customised versions of the configuration file, as a configuration file in the same directory as the MEGS_Log executable may be overwritten when updates are made the MEGS_Log application.

You can refer to the comments in the default configuration file that is installed in the same directory as the MEGS_Log executable for more information on the content and format of the configuration file.

See also:

• How to customise MEGS_Log

About Client mode

By setting a particular registry key your system administrator can specify that MEGS_Log should operate in Client mode. In client mode, MEGS_Log only checks for a configuration file in the same directory as the MEGS_Log executable and functions within MEGS_Log that allow editing of the configuration file are disabled.