# Tagged Questions

25 views

### Metric for movement in 2D space

I have a set of points that represent the coordinates of an object moving in the 2D space at different points in time. Using this points I want to get a "measurement" that will describe the general ...
58 views

### regression on circular data

How would one design a regression where the dependent variable is measured in degrees on a circle? The dependent variable is on the range [0, 360), and the independent variables are demographic ...
213 views

### Intersection line of planes

There are 2 planes: $Q: 2x-y=2$ $R: x-y-z=1$ How do I find the line $p=(1,2,-1)$, which intersects $Q$ and $R$ plane.
127 views

### Middle line between points

How can we calculate LINE that most fit the points T1(1,0) T2(2,0) T3(-1,1) T4(0,1) $x= (1,2,-1,0)$ $y= (0, 0, 1, 1)$ $1= (1, 1, 1, 1)$
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### Plane vertices from normals and centroid

I am trying to visualize a best fit plane for a set of points which is defined by the normals and the centroid. I have to find the boundary vertices of the plane given the extent of the plane. Is ...
136 views

### Fitting a Cylinder Around a Line

Assuming data like the following: ...
3k views

### Finding the intersection point of many lines in 3D (point closest to all lines)

I have many lines (let's say 4) which are supposed to be intersected. (Please consider lines are represented as a pair of points). I want to find the point in space which minimizes the sum of the ...
Given a collection of points $P \subset \mathbb R^3$, a crude characterization of the "shape" of $P$ is sometimes given by the principal components. We construct a covariance matrix, e.g., if $P$ is ...