# Volume Bars **Volume Bars** are built based on volume data — tick or exchange volume when available. Time is not involved in this aggregation. Each bar in a Volume Bar chart contains a specified volume level. This volume level is reached by accumulating the volume of each of the underlying bars. When the volume level is reached, the next Volume Bar begins to accumulate volume from the underlying bars. ![The comparison between Time chart and Volume Bars chart type in Quantower platform](https://4186075531-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LD6FsRvQ3jgwJIg6O7r%2F-LoPsQj9WU-r3rm8MBXs%2F-LoPsq6_AoSYWa7bSJvl%2Fvolume-bars-chart-in-quantower.png?alt=media\&token=0152524b-4a8f-4f01-8ac2-2527359f19d8) ### How to set Volume Bars chart? Open the Timeframe switcher and select from the list the Volume Bars chart type. Set the necessary value of lots (or ticks) that will be included in each bar (candle). ![Select Volume bars chart type via timeframe selector](https://4186075531-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LD6FsRvQ3jgwJIg6O7r%2F-LoPsQj9WU-r3rm8MBXs%2F-LoQAKCTUaaZypwM-xLk%2Fselection%20of%20Volume%20bars.png?alt=media\&token=9faab789-7913-4813-81d6-96e2a734e4d9) --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://help.quantower.com/quantower/analytics-panels/chart/chart-types/volume-bars.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.