Sending a character string ?

2022 1 30
2 个回答
更新时间：2022 2 5
1 次查看（30 天）

0 个投票

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.

3 个评论
显示 1更早的评论 隐藏 1更早的评论

KSSV
KSSV 2022-1-30
What field? Are you talking about a structure?
Stéphan Clark
Stéphan Clark 2022-1-30
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
编辑：Christopher Stapels 2022-1-31
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.

请先登录，再进行评论。

请先登录，再回答此问题。

回答（2 个）

Stéphan Clark
Stéphan Clark 2022-2-4
编辑：Stéphan Clark 2022-2-4

0 个投票

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.

0 个投票

Write the data to the status field (...&status=myStatus... ), and then set 'show status" in your channel settings.

1 个评论
显示 -1更早的评论 隐藏 -1更早的评论

Stéphan Clark
Stéphan Clark 2022-2-5
Sounds like a reasonnable workaround. I'll try that.
Thank you.

请先登录，再进行评论。

社区

更多回答在  ThingSpeak Community

类别

在 帮助中心 和 File Exchange 中查找有关 Read Data from Channel 的更多信息

产品

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by