This template projects a vector onto a 1-D subspace (that is, onto another vector or line through the origin).

When projecting a vector onto another vector, both vectors should be of the same dimension. To obtain a graph, the vectors must evaluate to numeric.

When projecting a vector onto a line through the origin, the vector must be 2-D.

In the graph, the black vector is the one being projected, the green vector is the projection, and the red vector is the orthogonal component.