In my Sonoanalysis program, I need to mark the position I want on the sono image. Before I read this article: Superimposing line plots on image, there are two ways I thought to achieve this task. One is using plot function, and the other is changing the color of the pixel of position I click. However, the later method has a critical problem that it may be a time wasting method if I want to mark the position repeatedly, because I have to change several pixels if the shape of the marker is cross or circle. As a result of that, I choose the first way to accomplish my task finally. Today, I surfed on the internet to seek the correct method to do this kind of thing.
In this article: Superimposing line plots on image, the author who manages the Image & Geospatial development team at the Mathworks shows the way by using plot function, so I think it is a better way to do this task.
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