CODEWITHSUNDEEP
matlabplotmatlab-guide
pepe
pepe

Reputation: 9909

How to plot multiple clicked points on a Matlab axes?

Using ginput (or ginputax) I ask my user to click on an axes 10 times (for spectrum baseline correction).

My axes is based on a GUIDE GUI.

Essentially this begins like this 

plot(handles.axes_preview, ppm, xf_base, 'w-', 'LineWidth', 2);

spline_ppm = ginputax(handles.axes_preview, 10);

I'd like to plot each click (as ro) as they're being input, so the user has some feedback of where they clicked.

Any ideas how to code this?

Upvotes: 1

Views: 522

Answers (1)

Luis Mendo
Luis Mendo

Reputation: 112669

How about a simple loop?

axis(handles.axes_preview); %// make handles.axes_preview the current axis
hold on
for ii = 1:10
    coords(ii,:) = ginput(1);
    plot(coords(ii,1),coords(ii,2),'ro')
end

Also, you may want to add

set(handles.axes_preview),'XLimMode','manual');
set(handles.axes_preview),'YLimMode','manual');

at the beginning to prevent the axis scale from automatically changing as points are input by the user.

Upvotes: 1

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