In Canvas X Draw you can use Math Expressions to create a visual representation of an equation. The visual representation is created as a vector object that uses the current Pen and Fill inks. You can also apply any vector object effect as well as change the Pen and Fill inks. These objects can also be rendered and exported as images.

Choose **Path** | **Math Expression 2-D Plot** | **Cartesian**.

Choose **Path** | **Math Expression 2-D Plot** | **Polar**.

- Define the mathematical equation using the Categories and Items scroll boxes.
- Double-click an item to add it to the Expression field.
- Enter values in the range fields. The maximum range must be greater than the minimum range. You can also enter a value in the “1 Unit of” fields to set a scale.
- Use the Steps menu to control the quality of the curve.
- Click
**OK**to create the visual representation.

The lower portion of the dialog box indicates the correct syntax and shows an example of the expression.

- Click on the menu icon and select
**Save expression as**. - In the Save expression as dialog box, enter a name for the expression and click
**OK**.

Saved expressions appear at the bottom of the menu list.

Click on the menu icon and select the expression’s name from the list. The equation appears in the Expression field.

- Click on the menu icon and select
**Delete expression**. - In the Delete expression preset dialog box, select the expression you want to delete, and click
**OK**.

The following visual representations were created using the Math Expression 2-D Polar Plot dialog box.

Formula: r=1-sin(q) | Formula: r=sin(2q) | Formula: r=2q |

| ||

Formula: r=sin(6q)+log(1.5) | Formula: r=qsin2(q) |

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