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4:28 am
Silver
April 24, 2018
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how can i make a visualization of how many Entries i recived in a day on a bar graph? something like the the graph you can find in the account page https://thingspeak.com/account but not for every entry the account recived but just the ones from a particular channel. thank you! 🙂
2:37 pm
Moderators
March 7, 2017
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See the workflow in the Get Started tutorial, it has some similarities:
https://www.mathworks.com/help/thingspeak/getting-started-with-thingspeak.html
Create a new MATLAB analysis.
Use thingSpeakRead to read the values from your raw channel, read for one day, you can read into a timetable and measure the height.
numEntries=height(thingSpeakRead(channelID,'numDays',1,'OutputFormat','timetable'));
Then use thingSpeakWrite() to write the value of numEntries to another new channel that you create (processed channel).
Then save the analysis and set up a time control to call the analysis you made once per day.
The thingSpeak plot in your processed channel view can be changed to a bar graph using the pencil icon in the upper right of the plot. The default is a line plot.
4:45 am
Silver
April 24, 2018
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thanks a lot this really helped! i didn't know about the height function!
11:48 am
Moderators
March 7, 2017
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Glad I could help!
Let us know if you have an interesting new ThingSpeak application to share.
If you read into a vector such as
[data, times] = thingSpeakRead(channelID,'numDays',1);
Then you should use length(times) .
height() and width() are for timetables.
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