How to solve this error "unrecognized function or variable in matlab?

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Hi Team

I have this code below and my channel is set to public and now i am getting unrecognized function or variable using 'avg_temperature'. Anyone who can help me with this issue?

What I have tried:

data = thingSpeakRead(929272, "NumMinutes", 100);
aveTemp = mean(data(:,7));
apiKey = '****';
alertURL = "https://api.thingspeak.com/alerts/send";
options = weboptions("HeaderFields",["ThingSpeak-Alerts-API-Key", apiKey]);
alertBody = sprintf("The temperature is %0.2fF.", aveTemp);
if avg_temperature > 60.0
    webwrite(alertURL, "body", alertBody, "subject", alertSubject, options);
end

Posted 12-Jan-20 21:47pm

gcogco10

Updated 12-Jan-20 22:32pm

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Richard MacCutchan 13-Jan-20 4:32am

The message is perfectly clear. You are referring to the variable avg_temperature, but you have not defined it anywhere.

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phil.o · Accepted Answer · 2020-01-12T22:33:00

Most probably, replace avg_temperature with aveTemp; but it's just a wild guess.

If this does not solve the issue, then you will have to explain with more details where and how you did define the avg_temperature variable. If you have copied part of this code from somewhere without trying to understand what it does, then you may also have to rethink the way you are learning and experiencing.