Mark Lines

Available in the dashboard editor, you can add static mark lines to line charts for any metric on a dashboard. These mark lines enable you to quickly assess whether metrics fall within or outside your defined boundaries.

Adding a Mark Line

To add a mark line

1. Click Monitoring in the left sidebar.

2. Select the dashboard to edit.
   The dashboard editor appears.

3. Click Author in the upper-right corner.

4. Click Card.
   The Card detail pane appears.

5. In the Data section, locate the item you want to add a mark line to.

6. Click the ellipsis (...) next to the item, and then select Add Mark Line.
   The Mark line window appears.

7. Click + Line, and then set a value, color, and label.
   (Optional) Repeat this step to add multiple mark lines.
   Tip: Select the Color background area checkbox to shade the area beyond the mark line. The shading adjusts based on the direction of the value: upward for values with a greater-than sign (>) and downward for values with a less-than sign (<).

8. Click the checkmark icon in the upper-right corner to apply your changes and close the Mark line window.
   The mark line appears on the line chart.

Example: Comparing Good and Bad Values

This image shows an example of how you can use mark lines:

As seen in this example, you can customize the mark line profiles with more than one line and more than one label.

Keep in mind that toggling background areas will also toggle all mark lines for a given metric. Specifically, turning the background shading on or off will affect not just individual mark lines, but all mark lines associated with the metric. If needed, you can use the editor to customize whether the background area is shaded (colored) or not.

Note: Since mark lines are per metric, they are not available in the Timeseries Options Modal.