[R] self-starter functions for y = a + b * c^x

[Christof Kluß]

Hi Ken

Am 14-08-2012 11:50, schrieb ken knoblauch:
> Christof Kluß <ckluss <at> email.uni-kiel.de> writes:
> 
>> But now I search a self-starter for y = a + b * c^x
> 
> You might be able to adapt the SS.calib function
>  from the psyphy package for this.  
> It was designed to fit gamma functions to the 
> luminance vs frame buffer values measured on CRT
> screens.  But the functional form is similar.

thank you for the hint. I will test that function too. But it seems to
be something like y = a + b * x^c and not y = a + b * c^x

Greetings
Christof