---
title: "No data visible in dashboard"
slug: "no-data-visible-in-dashboard"
updated: 2025-08-13T09:20:59Z
published: 2025-08-18T11:50:28Z
canonical: "docs.calculus.group/no-data-visible-in-dashboard"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.calculus.group/llms.txt
> Use this file to discover all available pages before exploring further.

# No data visible in dashboard

## Introduction

Has your asset recently sent data, but the dashboard widgets are not displaying any values? This may be related to your settings.

---

## Check the aggregation type

When adding a widget to a dashboard, you can select an aggregation type for sensor data:

- **MIN:** the lowest value in the chosen time period.
- **MAX:** the highest value in the chosen time period.
- **SUM**: the sum of all values in the chosen time period.
- **AVG:** the average of the values in the chosen time period.
- **COUNT:** the number of values that have been sent in the chosen period.
- **FIRST:** the first value in the chosen period.
- **LAST:** the last value in the chosen period.
- **DIFF:** the difference between the first and last value in the chosen period.
- **LASTKNOWN:** the last value outside of the chosen time period.

> [!TIP]
> Tip!
> 
> Chosen period: this is the time span for which you want to see data. You can always adjust this period at the top of your dashboard.

## Solution

Open and edit the dashboard.

![Dashboard displaying engine metrics including current, voltage, and temperature readings.](https://cdn.document360.io/94d0a983-5058-4b02-8d06-1228a999a7a1/Images/Documentation/2025-08-12 15-38-55(3).png?sv=2026-02-06&spr=https&st=2026-11-11T14%3A02%3A53Z&se=2026-11-11T15%3A02%3A53Z&sr=c&sp=r&sig=kKpUbK81G5MZ8QIoMlP%2BkWO6bfc7RMiGTYBzvpi9uEA%3D)

Open the widget settings.

![Dashboard settings for a fuel level sensor with data source and aggregation options.](https://cdn.document360.io/94d0a983-5058-4b02-8d06-1228a999a7a1/Images/Documentation/2025-08-13 11-15-29.png?sv=2026-02-06&spr=https&st=2026-11-11T14%3A02%3A53Z&se=2026-11-11T15%3A02%3A53Z&sr=c&sp=r&sig=kKpUbK81G5MZ8QIoMlP%2BkWO6bfc7RMiGTYBzvpi9uEA%3D)

Choose **LASTKNOWN** as the aggregation type. Save the changes.