SphericalThreeVector

class coffea.nanoevents.methods.vector.SphericalThreeVector[source]

A spherical coordinate 3-dimensional vector

This mixin class requires the parent class to provide items rho, theta, and phi. Some additional properties are overridden for performance

Attributes Summary

`p`	Alias for `rho`
`p2`	Squared `p`
`r`	Distance from origin in XY plane
`rho`	Distance from origin in 3D
`theta`	Inclination angle from XY plane
`z`	Cartesian z value

Methods Summary

`multiply`(other)	Multiply this vector by a scalar elementwise using `x`, `y`, and `z` components
`negative`()	Returns the negative of the vector

Attributes Documentation

Distance from origin in XY plane

\(\sqrt{x^2+y^2} = \rho \sin(\theta)\)

Distance from origin in 3D

\(\sqrt{x^2+y^2+z^2} = \sqrt{r^2+z^2}\)

theta

Inclination angle from XY plane

\(\text{arctan2}(r, z)\)

Cartesian z value

\(\rho \cos(\theta)\)

Methods Documentation

multiply(other)[source]

Multiply this vector by a scalar elementwise using x, y, and z components

In reality, this directly adjusts r, theta and phi for performance