Radix

Radix

chart.radix(data) renders a birth chart and returns a Radix instance. You use this instance to draw aspects or chain into a transit ring.

Creating a Radix

import { Chart } from '@astrodraw/astrochart'

const data = {
  planets: {
    Sun:     [12.45, 0],
    Moon:    [145.67, 0],
    Mercury: [8.23, 0],
    Venus:   [35.12, 0],
    Mars:    [162.34, 0],
    Jupiter: [298.56, 0],
    Saturn:  [245.78, 0],
    Uranus:  [178.90, 0],
    Neptune: [210.12, 0],
    Pluto:   [238.34, 0]
  },
  cusps: [
    315.45, 35.67, 65.23, 92.45, 125.67, 155.89,
    135.45, 215.67, 245.23, 272.45, 305.67, 335.89
  ]
}

const chart = new Chart('chart', 600, 600)
const radix = chart.radix(data)

Methods

radix.aspects(formedAspects?): Radix

Draws aspect lines between planets inside the chart.

// Draw aspects computed from the default settings
radix.aspects()

// Or pass pre-computed aspects
radix.aspects(myAspects)

radix.transit(data: AstroData): Transit

Adds a transit ring around the radix chart. Returns a Transit instance.

const transit = radix.transit(transitData)
transit.aspects()

See the Transit API for full details.

radix.addPointsOfInterest(points: Points): Radix

Adds extra points (e.g. Arabic parts, fixed stars) to the aspect calculation without rendering them as planet symbols.

radix.addPointsOfInterest({ Vertex: [324.5, 0] })
radix.aspects()

Data format

AstroData passed to radix() must have:

Field	Type	Constraint
planets	Record<string, number[]>	Keys must be valid planet names
cusps	number[]	Exactly 12 degree values

Planet array: [degrees, velocity] — the second element is the astrological velocity; a negative value means the planet is retrograde.

Next Steps

• Types reference — AstroData, valid planet keys, full example
• Transit API — transit ring methods
• Radix Chart guide — practical walkthrough