To plot GPS data in real-time, similar to an ECG graph, you can utilize MATLAB's animatedline function within a loop that updates the plot every second. Below is a structured approach to achieve this:
% Initialize the figure and animated line
figure;
h = animatedline('LineWidth', 2); % Bold line for clear visibility
ax = gca; % Get current axes
ax.YGrid = 'on'; % Add grid for better visualization
xlabel('Time (s)');
ylabel('GPS Value');
title('Real-Time GPS Data Plot');
% Simulate incoming GPS data (replace this with your actual data)
gps_data = [560, 940, 780, 600, 880, 720, 650, 900, 780]; % Example data
time_interval = 1; % 1-second interval
t = 0; % Initialize time counter
% Example for reading from a serial port (adjust COM port and settings)
s = serialport('COM3', 9600); % Replace 'COM3' and baud rate as needed
while true % modify the breaking condition accordingly
data = readline(s); % Read GPS data from the device
gps_value = str2double(data); % Convert string to numeric
t = t + 1;
addpoints(h, t, gps_value);
drawnow;
pause(1);
end
For more details, please refer to the following MathWorks documentations:
- animatedline - https://www.mathworks.com/help/matlab/ref/animatedline.html
- serialport - https://www.mathworks.com/help/matlab/ref/serialport.html
- readline - https://www.mathworks.com/help/instrument/serialport.readline.html
- addpoints - https://www.mathworks.com/help/matlab/ref/addpoints.html
- drawnow - https://www.mathworks.com/help/matlab/ref/drawnow.html
Hope this helps!
