Use Case 14: Real-Time Data Visualization on the Dashboard

[ohodovaniuk1]

Real-Time Data Visualization on the Dashboard with graphs

User Story

As a user, I want to view real-time sensor data (temperature, humidity, and moisture) on my dashboard so that I can monitor environmental conditions instantly.

Description

This use case involves implementing real-time data visualization on the user dashboard, where the latest sensor data (temperature, humidity, and soil moisture) is displayed. The dashboard should refresh automatically to show updated data at regular intervals (e.g., every 10 seconds). The data will be displayed in both table and graph formats for ease of understanding.

Acceptance Criteria

• [ ] The frontend is updated to display real-time sensor data (temperature, humidity, and moisture) on the user dashboard.
• [ ] Data is displayed in both table and graph formats.
• [ ] The data refreshes automatically every X seconds (e.g., 10 seconds).
• [ ] The dashboard is responsive and works on both desktop and mobile devices.
• [ ] Proper error handling is implemented for cases where real-time data cannot be retrieved.

Testing

Normal Flow of Events

The user logs into their account and navigates to the dashboard. The system retrieves real-time sensor data from the backend API. The dashboard displays the temperature, humidity, and moisture levels in table and graph formats. The data refreshes every X seconds to show the latest readings.

Alternate/Exceptional Flows:

S-1: Failure to retrieve real-time data

The system fails to retrieve data due to backend or network issues. The system displays an error message: "Unable to retrieve live data. Please try again later." The dashboard stops automatic refresh until the data is available again.

S-2: Slow or delayed data refresh

Data refresh is delayed due to high server load or large datasets. The system adjusts the refresh rate dynamically to maintain performance.

[ohodovaniuk1]

This user story outlines the implementation of real-time data visualization on the dashboard for temperature, humidity, and soil moisture. Key features include:

Data Display: Real-time data shown in both table and graph formats. Automatic Refresh: Dashboard updates every 10 seconds. Responsive Design: Works on both desktop and mobile devices. Error Handling: Displays a message if data retrieval fails and pauses refresh. Testing Scenarios: Normal Flow: User logs in, data is retrieved, and displayed correctly. Error Scenarios: S-1: If data can't be retrieved, an error message is shown. S-2: Refresh rate adjusts if there are delays.