Analysis error with input timetables

Why I am getting error:
Error using timetable/retime
All variables in input timetables must be numeric, datetime, or duration when synchronizing using 'mean'.
Error in ko - 1h avg to new channel (line 10)
avgdata=retime(data,'regular','mean','TimeStep',hours(hourz));
DATA EXPORT CSV LOOKS LIKE:
2023-01-21T23:47:13+02:00 45161 533 23.187 29.27 18.23 18.61 -8.5 93 -10
CODE ko - 1h avg:
dayz=1;
hourz=1;
rc=1234;
rk='KEY';
wc=5678;
wk='KEY';
data=thingSpeakRead(rc,'ReadKey',rk,'OutputFormat','timetable','numDays',dayz);
avgdata=retime(data,'regular','mean','TimeStep',hours(hourz));
thingSpeakWrite(wc,avgdata,'WriteKey',wk);

3 Commenti

Perhaps look at the datetime. MATLAB might not know the format if you arent telling it.
try
datetime('2023-01-21T23:47:13+02:00')
and see if you get a date time object back. I think you will have to reformat that column in your data and tell MATLAB the format you are using.
Walter Roberson
Walter Roberson il 22 Gen 2023
Modificato: Walter Roberson il 28 Gen 2023
The T is the main problem. The default formats do not support the time zone offset field but you can specify XXX as an input format to code for that. There is no direct code for the T however. You have to code 'T' for that where the apostrophes are part of the syntax. For example "uuuu-MM-dd'T'HH:mm:ssxxx"
Notice the use of " to make it easier to code the literal ' characters
abba baab
abba baab il 28 Gen 2023
Modificato: abba baab il 28 Gen 2023
I have not altered timestamp format. Timestamp is made automatically by Thingspeak on channel write. And it cannot read it :D :success: :lol:
Though timestamp works fine in channel graphs and in visualizations, but not with analysis.

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il 22 Gen 2023

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