fit plot automatic refreshing

hello everybody

in curve fitting window I have a fit plot with data imported from a file in workspace. this file refreshes automatically every 1 min thanks to a timer.

is there a way to automatically refresh the fit plot any time the file connected refreshes? so avoiding to load data manually from workspace every minute

Answer 1

[Meet]

Hi Roberto,

You can utilize the “drawnow” command along with the “timer” function to automatically refresh the fit plot with data from your file.

The “timer” function can be set to call a function that loads the data from the file and updates the plot every minute.

The “drawnow” command ensures that MATLAB renders the current figure window immediately, updating figures and processing any pending callbacks efficiently.

function updatePlot(~, ~)
    data = load('autoUpdatingFile.mat');

    xData = data.xData;
    yData = data.yData;

    % Fit a linear model
    fitObject = fit(xData, yData, 'poly1');

    % Plot the fit
    plot(fitObject, xData, yData);
    title('Linear Fit');
    xlabel('X Data');
    ylabel('Y Data');

    drawnow; % Update figure immediately
end

% Set up a timer to call updatePlot every minute
t = timer('ExecutionMode', 'fixedRate', 'Period', 60, 'TimerFcn', @updatePlot);

% Start the timer
start(t);