Re: [R] Error Message from Variogram.lme Example

2006-03-14 Thread Prof Brian Ripley
On Tue, 14 Mar 2006, Prof Brian Ripley wrote:

 So this is most likely a bug in package nlme.  However, we need a
 reproducible example to be able to do anything about it, and without even
 the traceback() we cannot be sure that it is in nlme.

 Please follow the bug-reporting procedure.

It does seem to be a bug in Variogram.lme (assuming this is the BodyWeight 
dataset from package nlme).  The lines

 val - na.omit(val)
 val$n.pairs - as.vector(table(na.omit(cutDist)))

need to be interchanged since one bin has a zero count and gets omitted.



 On Mon, 13 Mar 2006, Rick Bilonick wrote:

 When I try to run the example from Variogram with an lme object, I get
 an error (although summary works):

 R : Copyright 2005, The R Foundation for Statistical Computing
 Version 2.2.1  (2005-12-20 r36812)
 ISBN 3-900051-07-0
 ...

  fm1 - lme(weight ~ Time * Diet, BodyWeight, ~ Time | Rat)
 Error: couldn't find function lme
  Variogram(fm1, form = ~ Time | Rat, nint = 10, robust = TRUE)
 Error: couldn't find function Variogram
 library(nlme)
  fm1 - lme(weight ~ Time * Diet, BodyWeight, ~ Time | Rat)
  Variogram(fm1, form = ~ Time | Rat, nint = 10, robust = TRUE)
 Error in $-.data.frame(`*tmp*`, n.pairs, value = c(160, 0, 160,
 16,  :
replacement has 10 rows, data has 9

 [...]

Information on package 'nlme'

 Description:

 Package:   nlme
 Version:   3.1-68.1
 Date:  2006-01-05




-- 
Brian D. Ripley,  [EMAIL PROTECTED]
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel:  +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UKFax:  +44 1865 272595

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[R] Error Message from Variogram.lme Example

2006-03-13 Thread Rick Bilonick
When I try to run the example from Variogram with an lme object, I get
an error (although summary works):

R : Copyright 2005, The R Foundation for Statistical Computing
Version 2.2.1  (2005-12-20 r36812)
ISBN 3-900051-07-0
...

  fm1 - lme(weight ~ Time * Diet, BodyWeight, ~ Time | Rat)
Error: couldn't find function lme
  Variogram(fm1, form = ~ Time | Rat, nint = 10, robust = TRUE)
Error: couldn't find function Variogram
 library(nlme)
  fm1 - lme(weight ~ Time * Diet, BodyWeight, ~ Time | Rat)
  Variogram(fm1, form = ~ Time | Rat, nint = 10, robust = TRUE)
Error in $-.data.frame(`*tmp*`, n.pairs, value = c(160, 0, 160,
16,  :
replacement has 10 rows, data has 9


 summary(fm1)
Linear mixed-effects model fit by REML
 Data: BodyWeight
   AIC  BIClogLik
  1171.720 1203.078 -575.8599

Random effects:
 Formula: ~Time | Rat
 Structure: General positive-definite, Log-Cholesky parametrization
StdDev Corr
(Intercept) 36.9390723 (Intr)
Time 0.2484113 -0.149
Residual 4.4436052

Fixed effects: weight ~ Time * Diet
Value Std.Error  DF   t-value p-value
(Intercept) 251.65165 13.094025 157 19.218816  0.
Time  0.35964  0.091140 157  3.946019  0.0001
Diet2   200.66549 22.679516  13  8.847873  0.
Diet3   252.07168 22.679516  13 11.114509  0.
Time:Diet20.60584  0.157859 157  3.837858  0.0002
Time:Diet30.29834  0.157859 157  1.889903  0.0606
 Correlation:
   (Intr) Time   Diet2  Diet3  Tm:Dt2
Time   -0.160
Diet2  -0.577  0.092
Diet3  -0.577  0.092  0.333
Time:Diet2  0.092 -0.577 -0.160 -0.053
Time:Diet3  0.092 -0.577 -0.053 -0.160  0.333

Standardized Within-Group Residuals:
Min  Q1 Med  Q3 Max
-3.25558796 -0.42196874  0.08229384  0.59933559  2.78994477

Number of Observations: 176
Number of Groups: 16


Information on package 'nlme'

Description:

Package:   nlme
Version:   3.1-68.1
Date:  2006-01-05


Rick B.

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Re: [R] Error Message from Variogram.lme Example

2006-03-13 Thread Prof Brian Ripley
So this is most likely a bug in package nlme.  However, we need a 
reproducible example to be able to do anything about it, and without even 
the traceback() we cannot be sure that it is in nlme.

Please follow the bug-reporting procedure.


On Mon, 13 Mar 2006, Rick Bilonick wrote:

 When I try to run the example from Variogram with an lme object, I get
 an error (although summary works):

 R : Copyright 2005, The R Foundation for Statistical Computing
 Version 2.2.1  (2005-12-20 r36812)
 ISBN 3-900051-07-0
 ...

  fm1 - lme(weight ~ Time * Diet, BodyWeight, ~ Time | Rat)
 Error: couldn't find function lme
  Variogram(fm1, form = ~ Time | Rat, nint = 10, robust = TRUE)
 Error: couldn't find function Variogram
 library(nlme)
  fm1 - lme(weight ~ Time * Diet, BodyWeight, ~ Time | Rat)
  Variogram(fm1, form = ~ Time | Rat, nint = 10, robust = TRUE)
 Error in $-.data.frame(`*tmp*`, n.pairs, value = c(160, 0, 160,
 16,  :
replacement has 10 rows, data has 9

[...]

Information on package 'nlme'

 Description:

 Package:   nlme
 Version:   3.1-68.1
 Date:  2006-01-05


-- 
Brian D. Ripley,  [EMAIL PROTECTED]
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel:  +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UKFax:  +44 1865 272595

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R-help@stat.math.ethz.ch mailing list
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Re: [R] Error Message from Variogram.lme Example

2006-03-13 Thread Dieter Menne
Rick Bilonick rab45+ at pitt.edu writes:

 
 When I try to run the example from Variogram with an lme object, I get
 an error (although summary works):
 
  library(nlme)
   fm1 - lme(weight ~ Time * Diet, BodyWeight, ~ Time | Rat)
   Variogram(fm1, form = ~ Time | Rat, nint = 10, robust = TRUE)
 Error in $-.data.frame(`*tmp*`, n.pairs, value = c(160, 0, 160,
 16,  :
 replacement has 10 rows, data has 9
 

The example is does not run, but if you leave out nint=10 (giving default 
nint=20), or use any number nint =12, it works.

The example has a don't run in the docs, but it could easily be cleaned up. 
If it should serve as documentation of the error message, it's a bit confusing.

Dieter

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