search for: getprofil

Displaying 6 results from an estimated 6 matches for "getprofil".

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2005 Dec 22
3
Windows crash in confint() with nls fit (PR#8428)
...ort-do-you-want- to-send-this-to-Microsoft dialog box. On 2000 I get a "Rgui has generated errors ..." dialog box. I can get this far: debug: profiledModel <- .Call("nls_iter", fittedModel, ctrl, trace, PACKAGE = "stats") Browse[1]> where where 1: prof$getProfile() where 2: profile.nls(object, which = parm, alphamax = (1 - level)/4) where 3: profile(object, which = parm, alphamax = (1 - level)/4) where 4: confint.nls(n1) where 5: confint(n1) I'm not set up to debug compiled code on Windows, and I haven't been able to reproduce the problem on Lin...
2008 Sep 02
2
nls.control()
...ation matrix summary(VonB, corr=T) #Provides 95% confidence intervals for the parameter estimates confint(VonB) Everything works as it should right up until the confint(VonB) statement. When I ask for the confidence intervals, R goes through the process then stops and gives "Error in prof$getProfile() : step factor 0.000488281 reduced below 'minFactor' of 0.000976562". However, when I use nls.control=(minFactor=0.000001) OR nls.control(minFactor=0.000001), I get the same error. I'm at a loss. I'm not sure what else I can do to have R reduce the step size if it'...
2002 Feb 11
0
profile
I am running 1.3.1 on a Windows (NT 4.0) machine. I've fit a nonlinear model intended to predict crop yield from nutrient information, and want to use the profile function. If I type say, profile(simparj.fm) I get the following error message: "Error in prof$getProfile(): number of iterations exceeded maximum of 5.25515e-308" I used the profiler function to profile simparj,fm step by step, profiling one parameter at the time and calculating the profile t statistics. I've played around with different values for the parameters and found that profiler doe...
2006 Apr 18
1
Nonlinear Regression model: Diagnostics
...: 24484156 : 24484156 : 24484156 : 24484156 : 24484156 : 24484156 : 24484156 : 24484156 : 24484156 : 24484156 : 24484156 : 24484156 : 24484156 : 24484156 : 24484156 : 24484156 : 24484156 : 24484156 : 24484156 : 24484156 : Error in prof$getProfile() : number of iterations exceeded maximum of 50 I am unable to understand the error cause. Any pointers would be of great help. Regards, Sachin --------------------------------- [[alternative HTML version deleted]]
2004 Mar 18
1
profile error on an nls object
...4734893 1.4804170613 0.0005448297 1.889003 : 0.0003437136 1.8152947117 0.0005941152 1.875415 : 0.0002107001 1.8307953466 0.0006103544 1.875413 : 0.0002868541 1.8305923056 0.0006083076 1.875413 : 0.0003182105 1.8305924268 0.0006075744 1.875413 : 0.000300086 1.830592703 0.000608001 Error in prof$getProfile() : step factor 0.000488281 reduced below `minFactor' of 0.000976563 > Why is there an error on profile, which should only evaluate the objective function for different parameter values? Thanks a lot. Adrian
2010 Jun 15
1
Help with error
...ce intervals for each of these values. So I first use the command profile: (pr <- profile(dce.m1)) And then I ususally use the following command to get the confidence intervals: confint(pr, level=0.95) However, when I run the profile command, I am getting the following error: Error in prof$getProfile() : singular gradient Do you have any idea what this means, or what I can do to fix it? I have attached the corresponding file with the data I'm using in case that helps. Thanks! Gretchen Heavner -------------- next part -------------- conc rate 1.642954108 4.460677577 1.96419336 5.369018741...