Matlab Analysis won't update my field!

1 次查看(过去 30 天)
Hi
I used this code to show last 20 field1 datas in field2 chart:
% Enter your MATLAB Code below
readChId = XXX;
readKey = 'XXXXX';
writeChId = YYY;
writeKey = 'YYYYY';
[Data,t] = thingSpeakRead(readChId,'Fields',1,'NumPoints',20,'readkey',readKey);
thingSpeakWrite(writeChId,Data,'Fields',2,'Timestamps',t,'Writekey',writeKey);
display (Data)
when i click save an run i can see Data in output box but i can't see anything in field2 chart!
i activate timecontrol for every 30 minuts but still i can't see any data in field2 chart :(
what is my problem?

回答(1 个)

Vinod
Vinod 2020-7-12
If you want a plot of your values, you need to use a MATLAB visualization and add the output to the view of your channel.
  5 个评论
Esmaeil Chehrehnama
编辑:Esmaeil Chehrehnama 2020-7-12
Actually I am looking for a way to show only the last 20 data or the last 30 minuts of data on my field! How can i do that?

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