Combine 3 private channels in to one graph | MATLAB IoT Analytics | Forum

Hey,

Im trying to get around the 15 sec update limit by having 3 channels that update depending on a few counters on the arduino.

I was hoping the next part would be easy, but it isn't.

The data I am sending to each channel is very basic. Its a door bell counter, so its either 0 or 1.

If the bell is pressed a few times within 15 seconds, then it will send the three 1's to different channels. The rest of the presses are disregarded.

I would like to show the combined presses with a 30sec timescale on another channel as a vertical line graph.

Can anyone help?

This is what I have so far:

readChannelID1 = XXXXXX;
readChannelID2 = XXXXXX;
readChannelID3 = XXXXXX;

readAPIKey1 = 'XXXXXXXXXXXXXXXXX';
readAPIKey2 = 'XXXXXXXXXXXXXXXXX';
readAPIKey3 = 'XXXXXXXXXXXXXXXXX';

chan1 = thingSpeakRead(readChannelID1, 'Fields', 1, 'ReadKey', readAPIKey1, 'NumDays',2);
chan2 = thingSpeakRead(readChannelID2, 'Fields', 1, 'ReadKey', readAPIKey2, 'NumDays',2);
chan3 = thingSpeakRead(readChannelID3, 'Fields', 1, 'ReadKey', readAPIKey3, 'NumDays',2);

thingSpeakPlot(chan1, chan2, chan3);