I have a collection of points which I know lie exactly on a cylinder, but I don’t know the cylinder’s orientation, radius, or nationality. Using ** Fit Line**, which i assume uses Least Squares, I get an axis but in comparing the result to an actual cylinder, there is a difference, though small.

**is meant for a scatter of points, whereas I already know they are on a cylinder, so there is some regularity. It seems with that information I should be able to do even better. Then again, maybe not…**

`Fit Line`

determine axis.gh (12.9 KB)