Hi Gwyddion users,

I have a probably rather simple question to you but unfortunately so far 
i could not solve by myself.
I have a series of stm images taken at the same coordinates. By 
following a feature on several stm images I want to correct the drift 
based on the assumption of a constant drift velocity. Assuming the 
distorted image would have to be transformed by X' = X - Vd * t(x,y) , 
where X' is the corrected image, X is the distorted image, Vd is the 
calculated drift velocity and t(x,y) is the time for each data point. 
The solution will result in a polynomial equation. Its coefficients 
calculated from coordinate ranges [0,1] i want to put in the polynomial 
distortion dialog ( Data Process → Correct Data → Polynomial Distortion 
). Now i have two questions.

Am i doing this correctly? Probably this is a rather simple method but 
my images don't seem to improve as expected.

The undistorted image is only partially visible on the window due to the 
transformation. Is there a way to see the whole image?

Best,
Holger


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