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:
% Template MATLAB code for visualizing data from a channel as a 2D line
% plot using THINGSPEAKPLOT function.
% Prior to running this MATLAB code template, assign the channel ID to read
% data from to the 'readChannelID' variable. Also, assign the field ID
% within the channel that you want to read data from to plot.
% TODO - Replace the [] with channel ID to read data from:
readChannelID = [139311];% TODO - Replace the [] with the Field ID to read data from:
fieldID1 = [5];% Channel Read API Key
% If your channel is private, then enter the read API
% Key between the '' below:
readAPIKey = '';%%Read Data %%
[data, time] = thingSpeakRead(readChannelID, 'Field', fieldID1, 'NumPoints', 30, 'ReadKey', readAPIKey);%%Visualize Data %%
thingSpeakPlot(time, data);
Best Answer