Multiple Values in one Field

Question

Fabian Boruta 2019-4-17

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/456887-multiple-values-in-one-field

评论： AL-HASAN MANSURI 2023-2-6

Hello,

I am still quite new at Thingspeak and do not yet have the idea where to look exactly. As a result, I spent the last few hours trying to find a solution to my problem, unfortunately without success. My problem is, we have 8 fields per channel, but I have a sensor package with 10 parameters. Can I insert several parameters into one single field using an Arduino code or do I have to create a new channel separately and then merge them using the example you provided? For example, I wanted to send the dust fractions for p10 and p25 in a field. I hope you can help me:)

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Answer 1

Vinod 2019-5-7

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You can pack more data into a field, but, you will have to use your own algorithm in MATLAB to unpack the data and update MATLAB visualizations to see the data. Built in charts on ThingSpeak assume a single value per field.

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AL-HASAN MANSURI 2023-2-6

Please explain in simple terms or just give one example for better understanding

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Answer 2

Navadeep Ganesh U 2020-1-12

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https://ww2.mathworks.cn/matlabcentral/answers/456887-multiple-values-in-one-field#answer_409742

Updating multiple values to a field is not allowed in thingspeak. To update multiple data , you need to Cascade thingspeak.write. Its something like this.

String sendData = apiKey+"&field1="+String(temp)+"&field2="+String(humi)+"\r\n\r\n";

or,

ThingSpeak.setField(1, (float)temp);

ThingSpeak.setField(2, (float)humi);

ThingSpeak.writeFields(myChannelNumber, myWriteAPIKey);