---
title: "Vision - Bar Chart Scripting Functions"
---

# Vision - Bar Chart Scripting Functions

> This page details the various component and extension functions available for [Vision's Bar Chart](bar-chart.md) component.

## Component Functions
This component does not have component functions associated with it.

## Extension Functions
### configureChart
* Description
    * Provides an opportunity to perform further chart configuration via scripting.

* Parameters
    * Component **self**- A reference to the component that is invoking this function.
    * JFreeChart **chart**- A JFreeChart object. Refer to the [JFreeChart documentation](http://www.jfree.org/jfreechart/api/javadoc/index.html) for API details.

* Return
    * None

### getBarColor
* Description
    * Provides a chance to override the color of each bar. Can be used to have bar colors changed based upon bar value. Returning the value None will use the default bar color for the series.

* Parameters
    * Component **self** - A reference to the component that is invoking this function.

    * int **series** - The series index for this bar.

    * int **category** - The category index for this bar.

    * int **value** - The value (a number) of this bar.

    * Color **defaultColor** - The color that the bar would be if this function wasn't invoked.

* Return
    * Color