How to insert a camera acquisition in a XYgraph

[BruceAmmons]

The image display does not act exactly like a standard XY graph.  You can't display a cursor (easily).  It is possible to read the coordinates of the mouse, but not quite as easily.

It isn't clear what you are trying to do, so I don't really know what to recommend.  At first, I thought you just wanted to draw an XY plot on top of an image that lined up with points on the image, which is why I recommended the overlay.

Bruce

[MartinO.]

Initially I had a XYgraph with a plot (a circle), and this circle have to be the center of my video acquisition. I have parameters, and when I change them, the circle become smaller or bigger. It have to follow the size and scale of the image too when I zoom. The transparency solution works but when I zoom it doesn't match the scale anymore, while your solution seem to allow this.
I don't now if it is clearer for you now.

MartinO.

[ChristopheC]

If you need to manually move cursors, then the way to go is to use a graph on top of a display control.

If you just need to overlay cursors that don't need to be moved by the user, using the Vision Overlay functions to overlay lines in the image is the way to go.

-Christophe