Question about mouse click on figure
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Hello,
I am trying to put marks on the figure where I click and save it. I used 'ginput'
imshow('image.png')
for i = 1:1000
[p(i,1), p(i,2)] = ginput;
hold on;
plot(p(i,1), p(i,2));
hold off;
end
I found out that 'ginput' is not only taking 'left mouse click,' but also any other mouse clicks or keyboard pressing. Also, I don't know how to undo marking on the figure.
My questions are: Is there any way to only use left mouse click? And, is there any way to undo marking on the figure?
I will appreciate any advice.
Thank you
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Accepted Answer
Mischa Kim
on 20 Feb 2015
This code snippet should get you started:
button = 1;
getpt = 1;
[x,y,button] = ginput(1);
XY = [x y];
while (getpt == 1)
if (button == 1) % draw line for left mouse click
[xn,yn,button] = ginput(1);
XY = [XY; xn yn];
hold on
plot([x; xn],[y; yn])
x = xn; y = yn;
end
if (button == 3) % clear lines for right mouse click
children = get(gca, 'children');
delete(children);
getpt = 0;
end
end
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