My Visualizations stopped displaying anything ( no plot) - it worked for months. Even taking the template "Create a 2-D line plot" I just get the the result " _ MATLAB code ran successfully_." and no error code in the output field - but still no plot.
Is there a problem with connecting to thingspeak or what has changed?
Here the simple code from the template:
readChannelID = ;
fieldID1 = ;
readAPIKey = '';
[data, time] = thingSpeakRead(readChannelID, 'Field', fieldID1, 'NumPoints', 30, 'ReadKey', readAPIKey);