MATLAB Serial Monitor

% MATLAB-Arduino Serial Port Monitor
clear
clc

% Defined Serial Port
serialPort = '/dev/cu.usbmodem1421';            % define COM port #

%Open Serial COM Port
s = serial(serialPort)
fopen(s);

delay = .01;                    % make sure sample faster than resolution

while 1 %Loop when Plot is Active
    dat = fscanf(s,'%f'); %Read Data from Serial as Float
 
    if(~isempty(dat) && isfloat(dat)) %Make sure Data Type is Correct       
        disp (dat);
    end
        
    %Allow MATLAB to Update Plot
    pause(delay);
end

%Close Serial COM Port and Delete useless Variables
fclose(s);
clear count dat delay s serialPort;

Arduino & MATLAB

Please use the following links to browse through the Arduino & MATLAB resource:

1. Arduino Support from MATLAB: https://www.mathworks.com/hardware-support/arduino-matlab.html. 
2. MATLAB GUI Basics: https://www.youtube.com/playlist?list=PLPhi9dVsEVfZOlbIPsrQx0drJlBX9T15r.
3. Plotting in MATLAB: https://www.youtube.com/playlist?list=PLPhi9dVsEVfbNFWBDsgELOuKMob8qIr8S.