---
title: 'Gantt Charts'
url: 'https://manuals.remository.com/plotalot/charts/gantt-charts'
markdown: 'https://manuals.remository.com/plotalot/charts/gantt-charts.md'
date: '2026-10-06'
description: 'Gantt charts show project tasks and their dependencies, and optionally, the critical path. QueryRequirements Column 1: Text - Task ID Column 2: Text - Task Name Column 3: Text - Resource ID (or null or an empty string) Column 4: Numeric - Start…'
taxonomy:
  category:
    - docs
---

[](#) [ edit this page](https://github.com/getgrav/grav-skeleton-rtfm-site/blob/develop/pages/06.charts/16.gantt-charts/docs.md) 

  [ Plotalot for Joomla ](https://manuals.remository.com/plotalot/)     [ Charts ](https://manuals.remository.com/plotalot/charts)      Gantt Charts    

# Gantt Charts

Gantt charts show project tasks and their dependencies, and optionally, the critical path.

![img-042](https://manuals.remository.com/plotalot/user/pages/06.charts/16.gantt-charts/img-042.png "img-042")

| Query Requirements | **Column 1: Text - Task ID  Column 2: Text - Task Name  Column 3: Text - Resource ID** (or null or an empty string)  **Column 4: Numeric - Start Date as a Unix Timestamp** (or 0)  **Column 5: Numeric - End Date as a Unix Timestamp** (or 0)  **Column 6: Numeric - Duration in milliseconds** (or 0)  **Column 7: Numeric - Percentage complete  Column 8: Text - Dependencies as a comma separated list of Task ID's** (or null or an empty string)   The query must return eight columns. Some columns may be omitted by specifying 0, null, or an empty string. At least two of columns 4, 5 and 6 must be specified. |
|---|---|
| Multiple Plots | **No** |
| Axis Overrides | **No** |
| Data Formatting | **No** |
| Extra Columns | **No** |

The Dependencies column must not include any references to non-existent Task ID's. Any such references will result in a red 'error' message instead of a chart. Tasks that have no dependencies should specify the Dependencies column as null or an empty string. Space (' ') is also accepted as a null dependency.

 [ ](https://manuals.remository.com/plotalot/charts/geo-charts) [](https://manuals.remository.com/plotalot/charts/calendar-charts)

---

## Navigation

- Parent: [Charts](https://manuals.remository.com/plotalot/charts.md)
- Previous: [Geo Charts](https://manuals.remository.com/plotalot/charts/geo-charts.md)
- Next: [Calendar Charts](https://manuals.remository.com/plotalot/charts/calendar-charts.md)