% Run the example
updatePlotAfterIntervalExample;
% main function/logic
function updatePlotAfterIntervalExample
% Dummy data initialization
x = 0:0.1:10; % X-axis values
y = sin(x); % Initial Y-axis values (1st row)
% Create a figure
hFig = figure;
hAx = axes('Parent', hFig);
% Setup a timer
t = timer;
t.Period = 2; % 2 seconds interval
t.ExecutionMode = 'fixedRate';
t.TimerFcn = @(obj, event) updatePlot(obj, event, hAx, x, y);
% Start the timer
start(t);
% Display a message about how to stop
disp('Timer started. Close the figure to stop.');
% Stop and delete timer when the figure is closed
set(hFig, 'CloseRequestFcn', @(src, evnt) stopAndDeleteTimer(src, t));
end
% Define a timer function[callback] to update and plot data
function updatePlot(obj, event, hAx, x, y)
% Simulate adding a new row of data (adding noise here for variation)
newY = sin(x) + 0.1*randn(size(x));
y(end+1, :) = newY; % Append to the matrix
% Plot
cla(hAx); % Clear axes
plot(hAx, x, y);
title(hAx, ['Data updated at: ', datestr(now)]);
drawnow;
end
function stopAndDeleteTimer(src, tmr)
stop(tmr);
delete(tmr);
delete(src);
end
- Run the script. It will start updating the plot every 2 seconds.
- To stop the process, simply close the plot window. The timer will be stopped and deleted automatically.
------------------------------------------------------------------------------------------------------------------------------------------------
If you find the solution helpful and it resolves your issue, it would be greatly appreciated if you could accept the answer. Also, leaving an upvote and a comment are also wonderful ways to provide feedback.
Professional Interests
- Technical Services and Consulting
- Embedded Systems | Firmware Developement | Simulations
- Electrical and Electronics Engineering
Feel free to contact me.
