# BarChart _A data visualization element that represents numeric data through vertical bars. Each bar's height corresponds to its value, making it ideal for comparing quantities across categories or showing data changes over time. Supports multiple data series with customizable colors and styles._ Extends: `Graph` ## Usage ```lua -- Create a bar chart ``` ```lua local chart = main:addBarChart() ``` ```lua ``` ```lua -- Add two data series with different colors ``` ```lua chart:addSeries("input", " ", colors.green, colors.green, 5) ``` ```lua chart:addSeries("output", " ", colors.red, colors.red, 5) ``` ```lua ``` ```lua -- Continuously update the chart with random data ``` ```lua basalt.schedule(function() ``` ```lua while true do ``` ```lua chart:addPoint("input", math.random(1,100)) ``` ```lua chart:addPoint("output", math.random(1,100)) ``` ```lua sleep(2) ``` ```lua end ``` ```lua end) ```