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Create a Real-Time Dashboard Using the Live Editor

In the Live Editor, you can create dashboards to display and analyze real-time data. When creating these dashboards, you can use buttons to retrieve and display real-time data on demand, and other interactive controls to modify the displayed data. To show only the formatted text, controls, and results to the dashboard user, hide the code.

This example shows how to create a simple weather dashboard in the Live Editor. The dashboard uses a button and a check box to get and display real-time weather data.

To view and interact with the weather dashboard, open this example in MATLAB®.

Weather dashboard with code hidden, showing current weather conditions and graphs of the temperature, humidity, and wind over the past two days in Natick, MA

Create the Dashboard

You can open a copy of the weather dashboard by opening this example in MATLAB. To recreate the dashboard yourself, create a live script named WeatherDashboard.mlx. Then, add the descriptive text and code, configure the controls, and hide the code.

Add the Code

Copy the descriptive text and code in the Code for Weather Dashboard section to get and display real-time data from ThingSpeak™ channel 12397. This channel collects weather data from an Arduino-based weather station in Natick, Massachusetts.

Configure the Controls

The dashboard uses a button to update the displayed weather data and a check box to toggle the units used.

When you copy the code, the controls are replaced with their current value. To add the controls back into the code, insert a button at the beginning of the live script and replace the useSIUnits variable with a check box. Then, configure the controls by right-clicking them, selecting Configure Control, and specifying the control options as follows:

  • Button — Set the label to Update and set the Run execution option to Current section. When a user presses the button, the code in the current section runs, updating the weather data displayed in the dashboard.

  • Check box — Set label to Use SI units and set the Run execution option to Current section. When a user selects or clears the check box, the displayed weather data updates to show the selected units.

Configuration windows for the button and the check box

Hide the Code

To view the example as a dashboard, with the code hidden and only the controls and results visible, go to the View tab and click Hide Code. Users can now interact with the dashboard by clicking the button to get weather updates and toggling the check box to change units. The Live Editor retrieves and displays weather data based on user-provided inputs.

Code for Weather Dashboard

This section provides the complete contents of the WeatherDashboard.mlx live script file, including the descriptive text, code, and sample output.

Weather in Natick, MA

data = thingSpeakRead(12397,"NumDays",2,"Timeout",10,"OutputFormat","table");
latestValues = height(data);

useSIUnits = false;

if useSIUnits == 0
    disp("Current conditions: Temperature " + data.TemperatureF(latestValues) + ...
        "F, Humidity " + data.Humidity(latestValues) + "%, Wind " + ...
        data.WindSpeedmph(latestValues) + " mph")
    plotWeatherData(data.Timestamps,data.TemperatureF,"F",data.WindSpeedmph, ...

    tempC = (5/9)*(data.TemperatureF-32);
    tempC = round(tempC,2);
    windkmh = data.WindSpeedmph*1.60934;
    disp("Current conditions: Temperature " + tempC(latestValues) + "C, Humidity " + ...
        data.Humidity(latestValues) + "%, Wind " + windkmh(latestValues) + "vkph")
Current conditions: Temperature 31.2F, Humidity 85%, Wind 1.3 mph

Figure contains 3 axes objects. Axes object 1 with title Temperature (past 2 days), xlabel Date, ylabel Temp (F) contains an object of type line. Axes object 2 with title Humidity (past 2 days), xlabel Date, ylabel Humidity (%) contains an object of type line. Axes object 3 with title Wind (past 2 days), xlabel Date, ylabel Wind Speed (mph) contains an object of type line.

function plotWeatherData(timestamps,tempData,tempUnits,windData,windUnits,humidityData)
    ylabel("Temp (" + tempUnits + ")")
    title("Temperature (past 2 days)")
    ylabel("Humidity (%)")
    title("Humidity (past 2 days)")
    ylabel("Wind Speed (" + windUnits + ")")
    title("Wind (past 2 days)")

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