Re: [R] Substitute initial guesses of parameters in a function

2014-12-03 Thread philippe massicotte
Thank you! > Date: Wed, 3 Dec 2014 08:02:17 -0500 > From: murdoch.dun...@gmail.com > To: pmassico...@hotmail.com; r-help@r-project.org > Subject: Re: [R] Substitute initial guesses of parameters in a function > > On 03/12/2014 7:37 AM, philippe massicotte wrote: > &g

Re: [R] Substitute initial guesses of parameters in a function

2014-12-03 Thread Duncan Murdoch
On 03/12/2014 7:37 AM, philippe massicotte wrote: Hi everyone, I have a formula like this: f <- as.formula(y ~ p0a * exp(-0.5 * ((x - p1a)/p2a)^2)) I would like to "dynamically" provide starting values for p0a, p1a, p2a. Is there a way to do it? Just give a named vector of starting values.

[R] Substitute initial guesses of parameters in a function

2014-12-03 Thread philippe massicotte
Hi everyone, I have a formula like this: f <- as.formula(y ~ p0a * exp(-0.5 * ((x - p1a)/p2a)^2)) I would like to "dynamically" provide starting values for p0a, p1a, p2a. Is there a way to do it? #Params estimates p <- c(12, 10, 1) # This is where I have difficulties mystart <- substitute(...)