Mathematical analysis tools

GAT contains several tools to allow for the mathematical manipulation of individual grid cells in a raster grid. These tools include:

• Absolute Value
• Addition
• Ceil
• Division
• Exponential (base e)
• Floor
• Integer Divide
• Natural logarithm (ln)
• Log base 10
• Max
• Min
• Modulo
• Multiply
• Negate
• Power
• Reciprocal
• Round Values
• Square Root
• Square
• Subtraction
• Truncate values

The logical operators include:

• AND operator
• OR operator
• Exclusive OR (XOR) operator
• NOT operator

The comparison operators include:

• Greater Than
• Greater Than Equal To
• Less Than
• Less Than Equal To
• Equal To
• Not Equal To
• Is NoData Value

Notice that comparison operators result in Boolean images. All mathematical analysis tools can also be accessed through either the Raster Calculator or a Python script, by calling the EvaluateExpression function in the Whitebox Application Programming Interface (API).

See Also:

• None

Credits:

• John Lindsay (2012) email: jlindsay@uoguelph.ca