---
title: "Creating a Trend Group"
canonical: "https://docs.rubiconwater.com/space/TNC/1992163412/Creating%20a%20Trend%20Group"
format: markdown
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> Macro (toc)

Create a new Trend Group to display trended data for one or more tags or for a [Tag Group](https://rubiconwater.atlassian.net/wiki/spaces/DCNC/pages/2010185811). All members of a trend group are plotted together on the same chart.

> ℹ️ **Note**
> ℹ️ 
> ℹ️ You can also open an existing trend group and modify the settings. The Trend Group manager displays a list of any trend groups that are open in the Trending module. The current Trend Group is listed in red text.

After you create a trend group, add tags to the group. See <u>[Adding a Tag to a Chart](https://rubiconwater.atlassian.net/wiki/spaces/TNC/pages/1992163337)</u> for more details.

**Step 1**

In the Trending tool click **Trend Groups** to open the Trend Group Manager.

**Step 2**

In the Trend Group Manager, click **Add** to create a new Trend Group. The Trend Group Properties screen opens.

**Step 3**

Enter the following properties for the trend group:

| **Property** | **Description** |
| --- | --- |
| Group Name | Enter a name for the trend group. This will be used to identify the trend tab. |
| Time Domain | Choose the type of time domain for the trend group:<br>- Choose *Historic Trend Group* to trend data for a specific period. Define the period using the **Begin Time** and **End Time** fields.
- Choose *Real Time Trend Group* to trend the data as it is collected. Choose how much data to show in the **Duration** field, and how often to refresh the data in the **Update Interval** field.<br>You can also configure the time settings directly on the chart by using the **Time Domain** control in the Trending module tool bar. |
| Time Scale | Use the **Top** and **Bottom** fields to specify what time units to show on the top and bottom x-axes. Typically you will choose to show a time unit on one axis and none on the other. |
| Vertical Domain | Choose what data range to show on the Y-axis. The trending tool will automatically choose a range, but you can change the range to show more or less detail. |
| Color Scheme | Choose the **Background** color, **Font** color and grid **Line** color for the chart. You can also set these choices to be the default for new charts by clicking **Set As Default.** |
| Marker Style | Use these options to determine what details are displayed when you click on the graph to view trend data. See <u>[Viewing Data on a Trend Line](https://support.rubiconwater.com/help/netviz/content/topics/modules/trending/pcd_view_trend_data.htm)</u> for more details of this feature.<br>- Choose *Fixed* or *Floating* to specify whether the legend for each data point always appears at the same place, or floats to the location of the data value at the selected point.
- Click *Field Display* to choose what information is displayed for each data point. You can choose to display the tag value, tag units, data timestamp, site name, tag name and tag description. |
| Trend Legend | Select this checkbox to display a legend for the tags in this trend group. |

> ℹ️ **Note**
> ℹ️ 
> ℹ️ These settings are defaults that apply to the whole trend group. You can configure the properties of individual trend lines in the Trend Parts Manager. See <u>[Configuring the Display Settings for Trend Parts](https://rubiconwater.atlassian.net/wiki/spaces/TNC/pages/1992130594)</u> for more details.

**Step 4**

Click **Save** to save your changes.

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