Hello all, I'm calibrating a magnetometer sensor. An uncalibrated sensor will output values that will graph an ellipse. A calibrated sensor will output values that will graph a circle. Since there's data points all over the place, I'd like to find a piece of software that will take my data and give me a best-fit ellipse, with its equation, and with this I'll be able to calculate the eccentricity and see whether my calibrations actually worked. I'm not versed in coding whatsoever, so I would prefer if there was some sort of .exe program I could use that would automatically calculate based off my values. I've attached an picture of the type of data I'm dealing with.