Self-Starting nls amplitude of gaussian model

Amplitude version of gaussian peak function.

SSgaussAmp(input,y0,A,xc,w)

Arguments

input

a numeric vector of values at which to evaluate the model.
y0

offset
A

amplitude
xc

center
w

width

Value

a numeric vector of the same length as input. It is the value of the expression y0+A*exp(-(x-xc)^2/2*w^2).

Note

This is primarily intended for use in formulae given to the nls function or similar functions for example mle2.

References

Origin: http://www.originlab.com/doc/Origin-Help/GaussAmp-FitFunc.

See also

selfStart, getInitial

Examples

data(smoking)
model <- nlsLM(Germany ~ SSgaussAmp(year,y0,A,xc,w),data=smoking)