Skewed Gaussian minpack.lm objective function — skewedGaussian_minpack.lm

Skewed Gaussian minpack.lm objective function, calculates residuals using the skewed gaussian Peak Shape

skewedGaussian_minpack.lm_objectiveFun(params, observed, xx)

Arguments

params: (list) skewed gaussian parameters (params$gamma, params$center, params$sigma, params$amplitude)
observed: (numeric) observed y value at xx
xx: (numeric) value at which to evalute the skewed gaussian

difference between observed and expected skewed gaussian value evaluated at xx