Sending a character string ?

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Stéphan Clark
Stéphan Clark il 30 Gen 2022
Commentato: Stéphan Clark il 5 Feb 2022
Is it possible to send a character string (non-numeric) in a field? Of course, no numerical analysis would be possible and it would not be possible to plot the data in a graphic, but I would need that as sort of a log file for special events.
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Stéphan Clark
Stéphan Clark il 30 Gen 2022
Hi,
Using the simple REST interface with a GET, I'd like to send a string rather that just a number in a data field, for instance, field1. The sent string could be stored by the ThingSpeak server in a file or otherwise for further processing. From what I can see, it only seems possible to send numbers (or dates). Am I missing something ?
Christopher Stapels
Christopher Stapels il 31 Gen 2022
Modificato: Christopher Stapels il 31 Gen 2022
You can send strings. As you said, the automatic field plots wont work but string data is accepted. To read the data in MATLAB, use thingSpeakRead(...'outputformat','timetable') to get the string data. When you read with the REST API, no modification is required for the string data.

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Risposte (2)

Stéphan Clark
Stéphan Clark il 4 Feb 2022
Modificato: Stéphan Clark il 4 Feb 2022
Thank you Christopher.
I was hoping there would already be a way to easily read those strings (alike there is for viewing numerical data in graphics, in a simple text file or something). If it's not the case, then I'll have not other solution than to dig into your suggestion.

Christopher Stapels
Christopher Stapels il 4 Feb 2022
Write the data to the status field (...&status=myStatus... ), and then set 'show status" in your channel settings.
  1 Commento
Stéphan Clark
Stéphan Clark il 5 Feb 2022
Sounds like a reasonnable workaround. I'll try that.
Thank you.

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