Fitting two circles in 3D space separated by a distance

Hello, I have some points in 3D space which are distributed as two circles. One circle is on top of the other circle and there is a distance of separation between two circles. Radii of both the circles are similar. I need to fit the data points based on this model to find out the centers and radius of both the circles. A least sqaure type fitting will be good. I appreciate if anybody can help me with codes to do this.

[Ameer Hamza]

Can you share the data points and show an image on how do you want to fit the model to the data points.

[Rajdeep Chowdhury]

Hi Ameer,

I am attaching two representative datasets and corresponding images. Each dataset has 3 columns. So each row is one (x,y,z) point in 3d space. If you plot it, you will clearly see that there are 2 circles one on top of other. Unfortunately, I am still not able to simultaneously fit two circles and hence unable to provide you a model fit. I appreciate your help. Thanks

[Ameer Hamza]

So, If I understand correctly, you want to fit two circles to the data in 'no tilt.txt' and two circles to data in '30 degree tilt.txt'. Right?

[Rajdeep Chowdhury]

Right...however the tilt may vary from datset to dataset..