---
id: line-charts
title: Line Charts
description: Line charts are useful for displaying how data changes over time.
slug: /help/docs/dashboards/panels/line-charts/
canonical: https://www.sumologic.com/help/docs/dashboards/panels/line-charts/
---
import useBaseUrl from '@docusaurus/useBaseUrl';
Line charts are useful for displaying how data changes over time, where the Y axis of a line chart displays the count of an item, and the X axis is a timeline.
To create a line chart, you need to use a query that provides more than one data point in the **Aggregates** tab, see [aggregate operators](/docs/search/search-query-language/group-aggregate-operators) for details. Then the line is drawn between the data points to show the
change.
For example, you'd use the following query to create a Line chart:
```sumo
error | timeslice 1m | count by _timeslice
```
which would produce results such as:
})
### Create a line chart
To add a panel with a line:
1. Create or open a Dashboard and click on **Add Panel > Time Series**.
})
1. Provide a Metric or Log query and press **Enter** for it to run.
1. Once the query runs, ensure the chart type is set to **Line**.
})
1. [Modify the chart](./modify-chart.md) as desired.
1. Click the **Add to Dashboard** button on the top right of the window to add the panel to your dashboard.
})