value_at_lq()solves for quadratic Lorenz curves with c = 1
General quadratic form: ax^2 + bxy + cy^2 + dx + ey + f = 0
Arguments
- x
numeric: Point on curve.
- A
numeric: Lorenz curve coefficient. Output of
regres_lq()$coef[1].- B
numeric: Lorenz curve coefficient. Output of
regres_lq()$coef[2].- C
numeric: Lorenz curve coefficient. Output of
regres_lq()$coef[3].- key_values
named list: key values for lq fit, calculated using A, B, C parameters using gd_lq_key_values