#
Grid Property Calculator

ResInsight offers a built-in property calculator for grid parameters.
The **Grid Property Calculator** enables arithmetic expressions to be parsed and calculated for visualization purposes.

More details on mathematical operations are described in Curve Calculator

## Invoking the Grid Property Calculator

Invoke the the **Grid Property Calculator** by pressing the calculator icon
in the menu bar or by right-clicking
**Cell Result** in **Project Tree**.

## Example using Grid Property Calculator

As shown, the **Grid Property Calculator** is invoked by right-clicking
**Cell Result** in **Project Tree**.
As seen below, the **Grid Property Calculator** is per default prefilled with the simple summation
*Calculation_1 := x + y*.
This simple summation suffices for exemplifying its use.
However, you may change name of the calculation and add additional variables and arithmetic operators in the **Expression** field.

**If** statements are also supported with the following syntax `NEW_TRANX := if((TRANX < 0.01), 0.01, TRANX)`

The next step is to define the variables *x* and *y*.
An easy way to define each variable is to drag and drop properties from **Data Sources**. See screenshot below for drag and drop of *SOIL* from **Data Sources** to the row of variable *x* in **Grid Property Calculator** (emphasized in red).
Continue with drag and drop of *SGAS* to define *y*.

Finally, press **Calculate** to perform the actual calculation.

The calculated result is accessable via **Property Editor** as **Type** **Generated** **Result Property**.

## Reference Procedure using Grid Property Calculator

- Invoke the the
**Grid Property Calculator** by right-clicking
**Cell Result** in **Project Tree**.
- Define the expression for calculation by the involved variables and arithmetic operators
- Type the name of calculation, required variables and aritmetic operators into
**Expression**
- Press button
**Parse Expression** to verify the expression and referrals to actual variables

- Define each actual variable referred by the expression, either manually or by drag and drop from
**Data Sources**
- Press
**Calculate** to perform the actual calculation
- Access the calculated result in
**Property Editor** as **Type** **Generated** **Result Property**