Re: [R] nls confidence intervals

2003-08-14 Thread Duncan Murdoch
On Thu, 14 Aug 2003 09:08:26 -0700, Spencer Graves [EMAIL PROTECTED] wrote : This seems to identify a possible bug in R 1.7.1 under Windows 2000: tstDf - data.frame(y = 1:11, x=1:11) fit - nls(y~a/x, data=tstDf, start=list(a=1)) predict(fit, se.fit=TRUE) [1] 7.0601879 3.5300939 2.3533960

Re: [R] nls confidence intervals

2003-08-14 Thread Torsten Hothorn
On Thu, 14 Aug 2003, Spencer Graves wrote: This seems to identify a possible bug in R 1.7.1 under Windows 2000: tstDf - data.frame(y = 1:11, x=1:11) fit - nls(y~a/x, data=tstDf, start=list(a=1)) predict(fit, se.fit=TRUE) [1] 7.0601879 3.5300939 2.3533960 1.7650470 1.4120376

RE: [R] nls confidence intervals

2003-08-14 Thread Paul, David A
the approximation will work. Hope this helps, david paul -Original Message- From: Enrique Portilla [mailto:[EMAIL PROTECTED] Sent: Thursday, August 14, 2003 9:28 AM To: [EMAIL PROTECTED] Subject: [R] nls confidence intervals Hi, Does anyone know how to compute the confidence prediction

Re: [R] nls confidence intervals

2003-08-14 Thread Spencer Graves
This seems to identify a possible bug in R 1.7.1 under Windows 2000: tstDf - data.frame(y = 1:11, x=1:11) fit - nls(y~a/x, data=tstDf, start=list(a=1)) predict(fit, se.fit=TRUE) [1] 7.0601879 3.5300939 2.3533960 1.7650470 1.4120376 1.1766980 1.0085983 [8] 0.8825235 0.7844653 0.7060188

Re: [R] nls confidence intervals

2003-08-14 Thread Spencer Graves
[mailto:[EMAIL PROTECTED] Sent: Thursday, August 14, 2003 9:28 AM To: [EMAIL PROTECTED] Subject: [R] nls confidence intervals Hi, Does anyone know how to compute the confidence prediction intervals for a nonlinear least squares models (nls)? I was trying to use the function 'predict' as I

Re: [R] nls confidence intervals

2003-08-14 Thread Duncan Murdoch
On Thu, 14 Aug 2003 12:43:25 -0400, Duncan Murdoch [EMAIL PROTECTED] wrote : Perhaps the description below of what se.fit is supposed to do should be modified. I've done that now in the development version (to become 1.8.0). Err, I mean in the patch version (but it should still end up in

Re: [R] nls confidence intervals

2003-08-14 Thread Duncan Murdoch
On Thu, 14 Aug 2003 12:43:25 -0400, Duncan Murdoch [EMAIL PROTECTED] wrote : Perhaps the description below of what se.fit is supposed to do should be modified. I've done that now in the development version (to become 1.8.0). Duncan Murdoch __ [EMAIL