Re: [R] Finding local maxima on a loess surface

2012-05-05 Thread David Winsemius
On May 4, 2012, at 3:00 PM, Diego Rojas wrote: Thanks, I know about it but i wat to find several local maxima, so in other words I need a way to identify the places in the surface where both slopes are equal to 0 and the second derivative is negative. There is no way that I know that wil

Re: [R] Finding local maxima on a loess surface

2012-05-04 Thread Diego Rojas
Thanks, I know about it but i wat to find several local maxima, so in other words I need a way to identify the places in the surface where both slopes are equal to 0 and the second derivative is negative. On Fri, May 4, 2012 at 9:28 AM, David Winsemius wrote: > > On May 3, 2012, at 6:09 PM, Dieg

Re: [R] Finding local maxima on a loess surface

2012-05-04 Thread David Winsemius
On May 3, 2012, at 6:09 PM, Diego Rojas wrote: If a run a LOESS model and then produce a smoothed surface: Is there any way to determine the coordinates of the local maxima on the surface? ?predict# it has a loess method. [[alternative HTML version deleted]] -- David Winsem

[R] Finding local maxima on a loess surface

2012-05-03 Thread Diego Rojas
If a run a LOESS model and then produce a smoothed surface: Is there any way to determine the coordinates of the local maxima on the surface? [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/