How can draw point or circle in image

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Hi, i'm trying to make time series point in image
i used like this
----
image1=imread('xx.jpg')
for s=1:length(aa)
rgb{s}=insertMarker(image1,[aa,bb])
imshow(rgb{s}
end
------
in this code aa and bb is pixel position ..
i want draw circle or point in image by time..
the question is two.
1. how can i draw circle of point in image pixel position.
2. what it beautiful methods to draw time series pointing
Thanks ..
want to draw like Eye Tracking.. ^^

Accepted Answer

Image Analyst
Image Analyst on 1 Sep 2015
Why can't you just use plot:
hold on;
plot(x, y, 'ro', 'MarkerSize', 30);
  1 Comment
Jinseok Ur
Jinseok Ur on 2 Sep 2015
Thanks for your help ^^ circle marker is beautiful ..!

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