[R] about the function optim()

[Kenneth Z]

I found that the optim() function does not always reach the real minimum. Is it because the solution is trapped at a local minimum?

Thanks!
Ken



On Dec 12, 2012, at 2:17 PM, Jeff Newmiller <jdnewmil at dcn.davis.ca.us> wrote:

> ... origin pro?
> 
> Then why are you here?
> 
> It is not clear from your message that this has anything to do with R.
> ---------------------------------------------------------------------------
> Jeff Newmiller                        The     .....       .....  Go Live...
> DCN:<jdnewmil at dcn.davis.ca.us>        Basics: ##.#.       ##.#.  Live Go...
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> Research Engineer (Solar/Batteries            O.O#.       #.O#.  with
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> --------------------------------------------------------------------------- 
> Sent from my phone. Please excuse my brevity.
> 
> vishal katoch <vkatoch007 at yahoo.co.in> wrote:
> 
>> Hello,
>> i am working in origin pro,
>> i want to plot a graph as like a pdf attached but with black and white
>> lines.
>> here radial axis varies from 0 to 1. and angular axis from 0 degree to
>> 60 degree.and third axis which is depend on both radial and axial gives
>> non intersecting lines.
>> how can i read the data from plot for replot.
>> vikas 
>> 
>> 
>> 
>> 
>> ------------------------------------------------------------------------
>> 
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> 
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.