11. Expressions
Expressions of any type can be created in AragoJ using the Expressions Module. For example, it may be desirable to use an expression to calculate the area of a structure, or to derive measures such as size and weight from known allometric relations.
The Expressions Module is available through the Miscellaneous Tools Menu. Under the Info Panel choose the drawer symbol 
to open the Expressions box:
To Create a new expression, press 'New' in the lower left corner and start by giving a simple name to the expression in the Name field.
In the Expression field create the expression. Use letters for any variables in the expression; those will be presented in the list below the Expression field.
Press OK to save the expression.
HERE is a partial list of built-in operators, functions, and constants supported by the Expressions Module.
To use an expression choose it from the Expression list in the left panel. You can assign values to the variables from measurements taken from the images, by opening the drop-down list under the "Value" column
The result will be written to the measurements list in the Info Panel and will be included as a new column if a CSV file is exported.