Looking to use region-zoom interaction following the ginput selection

Hi,

I wanted to know whether there was a way to use the region-zoom interaction following an initial ginput selection on the graph.

I am currently using a 1000 ms (1s) on the x-axis of my graph to pick the region of interest using ginput. After having clicked a point, I want the graph to zoom in to a 50ms window (25ms on each side of my initial point). It is in this 50ms window of higher resolution I wish to make a final marking that would then output in my dataset. Any soloutions?

Answer 1

[Neha]

Hi Sayyam,

I understand that you want to zoom in to a specific region of interest after using "ginput" to select a point on the graph. You can refer to the following code snippet:

x = linspace(0, 1000, 1000);  % x-axis values (1000 ms)
y = sin(2*pi*0.01*x);        % y-axis values

plot(x, y)
xlabel('Time (ms)')
ylabel('Amplitude')
title('Zoom-in Example')

% Use ginput to select a point on the graph
[x_selected, ~] = ginput(1);

% Define the zoom window size
zoom_window = 50;  % 50 ms

% Calculate the x-axis limits for the zoomed region
x_zoom_start = x_selected - zoom_window/2;
x_zoom_end = x_selected + zoom_window/2;

% Set the x-axis limits for the zoomed region
xlim([x_zoom_start, x_zoom_end])

% Prompt the user to make a final marking in the zoomed region
[x_final, ~] = ginput(1);

fprintf('Final marking: %.2f ms\n', x_final);

Hope this helps!