Read multiple data from channel to visualizations

Hi, does anyone know how to read 3 different data from different channels and plot it using a temperature graph? I am only able to print the x/y axis and legend without any lines. The data I would like to read is only 10 points.

myTimes1 = minutes(length(data1));
myTimes2 = minutes(length(data2));
myTimes3 = minutes(length(data3));
plot(myTimes1,data1, myTimes2,data2, myTimes3, data3);
legend({'Age','Gender', 'Grade'});
xlabel('timestamp');
ylabel('Age+Gender+Grade');
title('whether age&gender affects passing rate'); 

It turns out like this:

https://thingspeak.com/apps/matlab_visualizations/392353

Thanks

Answer 1

[Akanksha]

Hey,

To read the data from the 3 different channels and get the correct plot, you can use the following code :

% Example data 
data1 = rand(1, 10); % Replace with your actual data 
data2 = rand(1, 10); 
data3 = rand(1, 10); 
% Generate time arrays 
myTimes1 = minutes(0:9); % 10 points from 0 to 9 minutes 
myTimes2 = minutes(0:9); 
myTimes3 = minutes(0:9); 
% Plot data 
figure; 
plot(myTimes1, data1, '-o', myTimes2, data2, '-x', myTimes3, data3, '-s'); 
legend({'Age', 'Gender', 'Grade'}); 
xlabel('timestamp'); 
ylabel('Age+Gender+Grade'); 
title('whether age&gender affects passing rate'); 

I have also attached the screenshot of plot I have visualized using above code.

Hope this helps!Thanks.