Using The Control File

The following page show a typical control file for the Grid Pre-Conditioning, Grid Levelling and Grid Merging processes. The purpose of each of the aliases and parameters are described in the comments. There are certain rules associated with the use of control files as explained below.

Alias and Parameter Control File Usage:

• Aliases and parameters are passed to the program from the control file using “keywords”.
• There must be a blank space before and after each keyword (i.e. keywords can't start in column 1). 
• The program searches for each blank-delimited keyword, and the blank-delimited character string immediately following the keyword are the values assigned to the alias/parameter. So spaces in field names and file paths are not allowed.
• Comments can be placed anywhere in the control file, except (obviously) between a keyword and its associated alias/parameter value. Note that keywords can thus be "commented out" by placing any non-blank character in the space preceding the keyword – if it's not blank-delimited, it won't be recognised.
• The use of the "equal" sign anywhere in the control file is prohibited. Use "–" or "–>" instead.
• Be careful not to use keywords accidentally in the comments!

IMPORTANT NOTE: Irrespective of your computers settings for Language and Region, GridMerge requires that a period (.) be used to separate the integer and fractional parts of real numbers. The use of a comma (,) is not allowed.

A sample control file is shown on the following page. Note that directories are specified by name (not full path). Input directories must reside in the Working Directory. Output directories will be created in the Working Directory by GridMerge.

Note that the parameters for the tools accessed through the Utilities menu are set at runtime through their own user interfaces. They can't be set via the Set Aliases And Parameters menu.