Displaying 6 results from an estimated 6 matches for "getprofile".
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$getProfile()
where 2: profile.nls(object, which = parm, alphamax = (1 - level)/4)
where 3: profile(object, which = parm, alphamax = (1 - level)/4)
where 4: confint.nls(n1)
where 5: confint(n1)
I'm not set up to debug compiled code on Windows, and I haven't
been able to reproduce the problem on Linu...
2008 Sep 02
2
nls.control()
...ation matrix
summary(VonB, corr=T)
#Provides 95% confidence intervals for the parameter estimates
confint(VonB)
Everything works as it should right up until the confint(VonB) statement. When I ask
for the confidence intervals, R goes through the process then stops and gives
"Error in prof$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$getProfile(): number of iterations exceeded maximum of
5.25515e-308"
I used the profiler function to profile simparj,fm step by step, profiling
one parameter at the time and calculating the profile t statistics. I've
played around with different values for the parameters and found that
profiler does...
2006 Apr 18
1
Nonlinear Regression model: Diagnostics
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Error in prof$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
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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
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