Rob Purser
Development Manager for IoT and Hardware Interfacing for MATLAB at MathWorks. Leads the creation of software that connects MATLAB with the real world
Tutorial Worksheet
Tutorial Worksheet
Tutorial Worksheet
MathWorks Products
ThingSpeak
The open IoT Platform with MATLAB® Analytics
- Any device can send data (REST)
- ThingSpeak Communication Library
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Simulink Blocks
- Live Visualizations as data comes in
- Base MATLAB is built in – no license required
- MATLAB code scheduled to run regularly
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Visualizations generated on demand
- Store derived data
- Send Commands to devices
- Tweet and make other REST calls
Analyze
Collect
Act
1000s of Users Worldwide
Tutorial Worksheet
Explore Live Data
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Live environmental data from the room
https://thingspeak.com/channels/132207 -
Gallery of live weather analysis
https://thingspeak.com/channels/52682 -
Live agricultural analysis data
https://thingspeak.com/channels/30040 -
Custom Live Data Dashboard
http://community.thingspeak.com/demo
Tutorial Worksheet
Tutorial Worksheet
Tutorial Worksheet
Analyze Traffic Data
Set up your ThingSpeak account
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Go to https://thingspeak.com/
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On the upper left, click "Sign Up"
- Pick a userID, enter your email, and set a password
Tutorial Worksheet
Analyze Traffic Data
Summarize one day of data from the car counter
- At top bar, choose "Apps" and then "MATLAB® Visualizations"
- Click "New", choose "Custom (no starter Code)", and click "Create"
- In the "Name" field, enter a name such as "My Car Counter Analysis"
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In the "MATLAB Code" section, enter the code below:
% Get the latest readings from the car counter disp('Latest readings from the car counter') thingSpeakRead(38629)
- Scroll down and Click the "Save and Run" button. You'll see the latest readings from the car counter
Tutorial Worksheet
Analyze Traffic Data
Summarize one day of data the car counter
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Erase your old code and enter the following: % Get data from the last 24 hours rte9Data = thingSpeakRead(38629,'NumDays',1,'OutputFormat','table'); % Calculate the median number of east bound cars in the past day disp('Median number of east bound cars in the past day') median(rte9Data.NumberOfEastboundCars) - Scroll down and Click the "Save and Run" button. You'll see the median number of cars that went eastbound in the past day
Tutorial Worksheet
Analyze Traffic Data
Plot hourly rates over the course of a day
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Erase your old code and enter the following:
% Get data from the last 24 hours rte9Data = thingSpeakRead(38629,'NumDays',1,'OutputFormat','table'); % Group the data by hour of day, and sum readings within each hour hourOfDay = floor(hours(timeofday(rte9Data.Timestamps))); [G, hourOfDay] = findgroups(hourOfDay); eastBound = splitapply(@sum, rte9Data.NumberOfEastboundCars, G); % Plot the east bound volume by hour plot(hourOfDay, eastBound) % Feel free to customize the title title('East bound hourly traffic volume') - Scroll down and Click the "Save and Run" button. You'll see the median number of cars that went eastbound in the past day
Tutorial Worksheet
Now What?
- Explore other data sets!
- Connect your own device to ThingSpeak!
- Develop your own Analytics!
Tutorial Worksheet
Prototyping IoT Analytics: Hands on with ThingSpeak™ and MATLAB®
By Rob Purser
Prototyping IoT Analytics: Hands on with ThingSpeak™ and MATLAB®
The Internet of Things typically involves a discussion of smart devices and the cloud, with much less attention paid to the data collection, pre-processing of acquired data, and development of real-time analytics algorithms. A successful data analytics strategy involves embedded sensor analytics, historical data analysis, and online analytics. In this hands-on session, each participant will work with devices and try out the various types of analytics in action.
