The script provides a simultaneus shift of two linescans which are present in two different images. At first the position of the linescan in image 0 is read out. Then a new linescan in image 1 is created exactly at the same position. When there is no linescan in one of both images, the linescans will be created in the middle of the images. After that the linescan can be simultaneusly shifted by mouse or arrow keys. To stop the running program one have to push the button: QUIT program in a dialog window.
Used for local comparison of two images (e.g. amplitude and phase image of the reconstructed wave) by linescans.