Signal Strength Histogram

This MATLAB visualization displays the incidence of WiFi signal strength received by your weather station over the most recent 24 hours.

% Signal Strength Histogram
% (C) 2020, Karl Berger
% 5 July 2018

%%% ENTER YOUR CHANNEL ID
 readChannelID = 286120; 

 % Signal Strength Field ID 
 signalStrengthFld = 7; 

%%% ENTER YOUR READ API KEY   
 readAPIKey = 'XXXXXXXXXXXXX';
 
 signalStrength = thingSpeakRead(readChannelID,'Fields',signalStrengthFld,…
 'NumMinutes', 24*60, 'ReadKey', readAPIKey); 
 histogram(signalStrength);
 xlabel('WiFi Signal Strength (dBm)');
 ylabel('Instances');
 title('Histogram of Signal Strength over last 24-Hours');
 grid on