Gerrit Eichner
2018-Jan-17 09:55 UTC
[R] effects: error when original data frame is missing
Hello, everyody,
when asking, e.g., Effect() to compute the effects of a fitted,
e.g., linear model after having deleted the data frame from the
workspace for which the model was obtained an error is reported:
> myair <- airquality
> fm <- lm(Ozone ~ Temp, data = myair)
> rm(myair)
> Effect("Temp", fm)
Error in eval(model$call$data, envir) : object 'myair' not found
Has anybody a better "workaround" for this than, e.g., explicitly
saving the fitted model object fm together with its original
environment or just the data needed frame (maybe in a list like
fm.plus.origdata <- list(fm, myair = myair)) to be able to restore
the original environemt (or at least the needed opriginal data
frame) of the time when fm was created?
Thx for any hint!
Regards -- Gerrit
---------------------------------------------------------------------
Dr. Gerrit Eichner Mathematical Institute, Room 212
gerrit.eichner at math.uni-giessen.de Justus-Liebig-University Giessen
Tel: +49-(0)641-99-32104 Arndtstr. 2, 35392 Giessen, Germany
Fax: +49-(0)641-99-32109 http://www.uni-giessen.de/eichner
Gerrit Eichner
2018-Jan-17 14:02 UTC
[R] effects & lme4: error since original data frame not found WASeffects: error when original data frame is missing
Hi, again,
I have to modify my query since my first (too simple)
example doesn't reflect my actual problem. Second try:
When asking Effect() inside a function to compute an effect
of an lmer-fit which uses a data frame local to the body of
the function, as in the following example (simplifying my
actual application), I get the "Error in is.data.frame(data) :
object 'X' not found":
> foo <- function() {
+ X <- sleepstudy
+ fm <- lmer(Reaction ~ Days + (Days | Subject), data = X)
+ Effect("Days", fm)
+ }
> foo()
Error in is.data.frame(data) : object 'X' not found
With lm-objects there is no problem:
> foo2 <- function() {
+ X <- sleepstudy
+ fm <- lm(Reaction ~ Days, data = X)
+ Effect("Days", fm)
+ }
> foo2()
....
Any idea how to work around this problem?
Once again, thx in advance!
Regards -- Gerrit
PS: > sessionInfo()
R version 3.4.2 (2017-09-28)
Platform: x86_64-w64-mingw32/x64 (64-bit)
Running under: Windows >= 8 x64 (build 9200)
Matrix products: default
locale:
[1] LC_COLLATE=German_Germany.1252 LC_CTYPE=German_Germany.1252
[3] LC_MONETARY=German_Germany.1252 LC_NUMERIC=C
[5] LC_TIME=German_Germany.1252
attached base packages:
[1] stats graphics grDevices utils datasets methods base
other attached packages:
[1] effects_4.0-0 carData_3.0-0 lme4_1.1-14 Matrix_1.2-11
car_2.1-5
[6] lattice_0.20-35
loaded via a namespace (and not attached):
[1] Rcpp_0.12.13 MASS_7.3-47 grid_3.4.2
MatrixModels_0.4-1
[5] nlme_3.1-131 survey_3.32-1 SparseM_1.77
minqa_1.2.4
[9] nloptr_1.0.4 splines_3.4.2 tools_3.4.2
survival_2.41-3
[13] pbkrtest_0.4-7 yaml_2.1.14 parallel_3.4.2
compiler_3.4.2
[17] colorspace_1.3-2 mgcv_1.8-22 nnet_7.3-12
quantreg_5.33
---------------------------------------------------------------------
Dr. Gerrit Eichner Mathematical Institute, Room 212
gerrit.eichner at math.uni-giessen.de Justus-Liebig-University Giessen
Tel: +49-(0)641-99-32104 Arndtstr. 2, 35392 Giessen, Germany
Fax: +49-(0)641-99-32109 http://www.uni-giessen.de/eichner
---------------------------------------------------------------------
Am 17.01.2018 um 10:55 schrieb Gerrit Eichner:> Hello, everyody,
>
> when asking, e.g., Effect() to compute the effects of a fitted,
> e.g., linear model after having deleted the data frame from the
> workspace for which the model was obtained an error is reported:
>
> > myair <- airquality
> > fm <- lm(Ozone ~ Temp, data = myair)
> > rm(myair)
> > Effect("Temp", fm)
> Error in eval(model$call$data, envir) : object 'myair' not found
>
> Has anybody a better "workaround" for this than, e.g., explicitly
> saving the fitted model object fm together with its original
> environment or just the data needed frame (maybe in a list like
> fm.plus.origdata <- list(fm, myair = myair)) to be able to restore
> the original environemt (or at least the needed opriginal data
> frame) of the time when fm was created?
>
> Thx for any hint!
>
> ?Regards? --? Gerrit
>
> ---------------------------------------------------------------------
> Dr. Gerrit Eichner?????????????????? Mathematical Institute, Room 212
> gerrit.eichner at math.uni-giessen.de?? Justus-Liebig-University Giessen
> Tel: +49-(0)641-99-32104????????? Arndtstr. 2, 35392 Giessen, Germany
> Fax: +49-(0)641-99-32109??????????? http://www.uni-giessen.de/eichner
>
> ______________________________________________
> R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
Gerrit Eichner
2018-Jan-17 14:49 UTC
[R] effects & lme4: error since original data frame notfoundWASeffects: error when original data frame is missing
Third "hi" in this regard and for the archives:
I found a (maybe "dirty") workaround which at least does what I need
by creating a copy of the required data frame in the .GlobalEnv by
means of assign:
foo <- function() {
assign("X", sleepstudy, pos = 1)
fm <- lmer(Reaction ~ Days + (Days | Subject), data = X)
Effect("Days", fm)
}
Hth -- Gerrit
---------------------------------------------------------------------
Dr. Gerrit Eichner Mathematical Institute, Room 212
gerrit.eichner at math.uni-giessen.de Justus-Liebig-University Giessen
Tel: +49-(0)641-99-32104 Arndtstr. 2, 35392 Giessen, Germany
Fax: +49-(0)641-99-32109 http://www.uni-giessen.de/eichner
---------------------------------------------------------------------
Am 17.01.2018 um 15:02 schrieb Gerrit Eichner:> Hi, again,
>
> I have to modify my query since my first (too simple)
> example doesn't reflect my actual problem. Second try:
>
> When asking Effect() inside a function to compute an effect
> of an lmer-fit which uses a data frame local to the body of
> the function, as in the following example (simplifying my
> actual application), I get the "Error in is.data.frame(data) :
> object 'X' not found":
>
> > foo <- function() {
> +? X <- sleepstudy
> +? fm <- lmer(Reaction ~ Days + (Days | Subject), data = X)
> +? Effect("Days", fm)
> + }
>
> > foo()
>
> Error in is.data.frame(data) : object 'X' not found
>
>
> With lm-objects there is no problem:
>
> > foo2 <- function() {
> +?? X <- sleepstudy
> +?? fm <- lm(Reaction ~ Days, data = X)
> +?? Effect("Days", fm)
> + }
>
> > foo2()
>
> ....
>
> Any idea how to work around this problem?
> Once again, thx in advance!
>
> ?Regards? --? Gerrit
>
> PS: > sessionInfo()
> R version 3.4.2 (2017-09-28)
> Platform: x86_64-w64-mingw32/x64 (64-bit)
> Running under: Windows >= 8 x64 (build 9200)
>
> Matrix products: default
>
> locale:
> [1] LC_COLLATE=German_Germany.1252? LC_CTYPE=German_Germany.1252
> [3] LC_MONETARY=German_Germany.1252 LC_NUMERIC=C
> [5] LC_TIME=German_Germany.1252
>
> attached base packages:
> [1] stats???? graphics? grDevices utils???? datasets? methods?? base
>
> other attached packages:
> [1] effects_4.0-0?? carData_3.0-0?? lme4_1.1-14???? Matrix_1.2-11 car_2.1-5
> [6] lattice_0.20-35
>
> loaded via a namespace (and not attached):
> ?[1] Rcpp_0.12.13?????? MASS_7.3-47??????? grid_3.4.2 MatrixModels_0.4-1
> ?[5] nlme_3.1-131?????? survey_3.32-1????? SparseM_1.77 minqa_1.2.4
> ?[9] nloptr_1.0.4?????? splines_3.4.2????? tools_3.4.2 survival_2.41-3
> [13] pbkrtest_0.4-7???? yaml_2.1.14??????? parallel_3.4.2 compiler_3.4.2
> [17] colorspace_1.3-2?? mgcv_1.8-22??????? nnet_7.3-12 quantreg_5.33
>
> ---------------------------------------------------------------------
> Dr. Gerrit Eichner?????????????????? Mathematical Institute, Room 212
> gerrit.eichner at math.uni-giessen.de?? Justus-Liebig-University Giessen
> Tel: +49-(0)641-99-32104????????? Arndtstr. 2, 35392 Giessen, Germany
> Fax: +49-(0)641-99-32109??????????? http://www.uni-giessen.de/eichner
> ---------------------------------------------------------------------
>
> Am 17.01.2018 um 10:55 schrieb Gerrit Eichner:
>> Hello, everyody,
>>
>> when asking, e.g., Effect() to compute the effects of a fitted,
>> e.g., linear model after having deleted the data frame from the
>> workspace for which the model was obtained an error is reported:
>>
>> ?> myair <- airquality
>> ?> fm <- lm(Ozone ~ Temp, data = myair)
>> ?> rm(myair)
>> ?> Effect("Temp", fm)
>> Error in eval(model$call$data, envir) : object 'myair' not
found
>>
>> Has anybody a better "workaround" for this than, e.g.,
explicitly
>> saving the fitted model object fm together with its original
>> environment or just the data needed frame (maybe in a list like
>> fm.plus.origdata <- list(fm, myair = myair)) to be able to restore
>> the original environemt (or at least the needed opriginal data
>> frame) of the time when fm was created?
>>
>> Thx for any hint!
>>
>> ??Regards? --? Gerrit
>>
>> ---------------------------------------------------------------------
>> Dr. Gerrit Eichner?????????????????? Mathematical Institute, Room 212
>> gerrit.eichner at math.uni-giessen.de?? Justus-Liebig-University
Giessen
>> Tel: +49-(0)641-99-32104????????? Arndtstr. 2, 35392 Giessen, Germany
>> Fax: +49-(0)641-99-32109??????????? http://www.uni-giessen.de/eichner
>>
>> ______________________________________________
>> R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
>> https://stat.ethz.ch/mailman/listinfo/r-help
>> PLEASE do read the posting guide
>> http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>
> ______________________________________________
> R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
Fox, John
2018-Jan-17 14:55 UTC
[R] effects & lme4: error since original data frame notfoundWASeffects: error when original data frame is missing
Dear Gerrit,
This issue is discussed in a vignette in the car package (both for functions in
the car and effects packages): vignette("embedding",
package="car") . The solution suggested there is the essentially the
one that you used.
I hope this helps,
John
-----------------------------
John Fox, Professor Emeritus
McMaster University
Hamilton, Ontario, Canada
Web: socialsciences.mcmaster.ca/jfox/
> -----Original Message-----
> From: R-help [mailto:r-help-bounces at r-project.org] On Behalf Of Gerrit
> Eichner
> Sent: Wednesday, January 17, 2018 9:50 AM
> To: r-help at r-project.org
> Subject: Re: [R] effects & lme4: error since original data frame
> notfoundWASeffects: error when original data frame is missing
>
> Third "hi" in this regard and for the archives:
>
> I found a (maybe "dirty") workaround which at least does what I
need by
> creating a copy of the required data frame in the .GlobalEnv by means of
> assign:
>
> foo <- function() {
> assign("X", sleepstudy, pos = 1)
> fm <- lmer(Reaction ~ Days + (Days | Subject), data = X)
> Effect("Days", fm)
> }
>
>
> Hth -- Gerrit
>
> ---------------------------------------------------------------------
> Dr. Gerrit Eichner Mathematical Institute, Room 212
> gerrit.eichner at math.uni-giessen.de Justus-Liebig-University Giessen
> Tel: +49-(0)641-99-32104 Arndtstr. 2, 35392 Giessen, Germany
> Fax: +49-(0)641-99-32109 http://www.uni-giessen.de/eichner
> ---------------------------------------------------------------------
>
> Am 17.01.2018 um 15:02 schrieb Gerrit Eichner:
> > Hi, again,
> >
> > I have to modify my query since my first (too simple) example
doesn't
> > reflect my actual problem. Second try:
> >
> > When asking Effect() inside a function to compute an effect of an
> > lmer-fit which uses a data frame local to the body of the function, as
> > in the following example (simplifying my actual application), I get
> > the "Error in is.data.frame(data) :
> > object 'X' not found":
> >
> > > foo <- function() {
> > +? X <- sleepstudy
> > +? fm <- lmer(Reaction ~ Days + (Days | Subject), data = X)
> > +? Effect("Days", fm)
> > + }
> >
> > > foo()
> >
> > Error in is.data.frame(data) : object 'X' not found
> >
> >
> > With lm-objects there is no problem:
> >
> > > foo2 <- function() {
> > +?? X <- sleepstudy
> > +?? fm <- lm(Reaction ~ Days, data = X)
> > +?? Effect("Days", fm)
> > + }
> >
> > > foo2()
> >
> > ....
> >
> > Any idea how to work around this problem?
> > Once again, thx in advance!
> >
> > ?Regards? --? Gerrit
> >
> > PS: > sessionInfo()
> > R version 3.4.2 (2017-09-28)
> > Platform: x86_64-w64-mingw32/x64 (64-bit) Running under: Windows >=
8
> > x64 (build 9200)
> >
> > Matrix products: default
> >
> > locale:
> > [1]
> LC_COLLATE=German_Germany.1252? LC_CTYPE=German_Germany.1252 [3]
> > LC_MONETARY=German_Germany.1252 LC_NUMERIC=C [5]
> > LC_TIME=German_Germany.1252
> >
> > attached base packages:
> > [1] stats???? graphics? grDevices utils???? datasets? methods?? base
> >
> > other attached packages:
> > [1] effects_4.0-0?? carData_3.0-0?? lme4_1.1-14???? Matrix_1.2-11
> > car_2.1-5 [6] lattice_0.20-35
> >
> > loaded via a namespace (and not attached):
> > ?[1] Rcpp_0.12.13?????? MASS_7.3-47??????? grid_3.4.2
> > MatrixModels_0.4-1
> > ?[5] nlme_3.1-131?????? survey_3.32-1????? SparseM_1.77 minqa_1.2.4
> > ?[9] nloptr_1.0.4?????? splines_3.4.2????? tools_3.4.2
> > survival_2.41-3 [13] pbkrtest_0.4-7???? yaml_2.1.14
> > parallel_3.4.2 compiler_3.4.2 [17] colorspace_1.3-2?? mgcv_1.8-22
> > nnet_7.3-12 quantreg_5.33
> >
> > ---------------------------------------------------------------------
> > Dr. Gerrit Eichner?????????????????? Mathematical Institute, Room 212
> > gerrit.eichner at math.uni-giessen.de?? Justus-Liebig-University
Giessen
> > Tel: +49-(0)641-99-32104????????? Arndtstr. 2, 35392 Giessen, Germany
> > Fax: +49-(0)641-99-32109??????????? http://www.uni-giessen.de/eichner
> > ---------------------------------------------------------------------
> >
> > Am 17.01.2018 um 10:55 schrieb Gerrit Eichner:
> >> Hello, everyody,
> >>
> >> when asking, e.g., Effect() to compute the effects of a fitted,
e.g.,
> >> linear model after having deleted the data frame from the
workspace
> >> for which the model was obtained an error is reported:
> >>
> >> ?> myair <- airquality
> >> ?> fm <- lm(Ozone ~ Temp, data = myair)
> >> ?> rm(myair)
> >> ?> Effect("Temp", fm)
> >> Error in eval(model$call$data, envir) : object 'myair' not
found
> >>
> >> Has anybody a better "workaround" for this than, e.g.,
explicitly
> >> saving the fitted model object fm together with its original
> >> environment or just the data needed frame (maybe in a list like
> >> fm.plus.origdata <- list(fm, myair = myair)) to be able to
restore
> >> the original environemt (or at least the needed opriginal data
> >> frame) of the time when fm was created?
> >>
> >> Thx for any hint!
> >>
> >> ??Regards? --? Gerrit
> >>
> >>
---------------------------------------------------------------------
> >> Dr. Gerrit Eichner?????????????????? Mathematical Institute, Room
212
> >> gerrit.eichner at math.uni-giessen.de?? Justus-Liebig-University
Giessen
> >> Tel: +49-(0)641-99-32104????????? Arndtstr. 2, 35392 Giessen,
Germany
> >> Fax: +49-(0)641-99-32109???????????
http://www.uni-giessen.de/eichner
> >>
> >> ______________________________________________
> >> R-help at r-project.org mailing list -- To UNSUBSCRIBE and more,
see
> >> https://stat.ethz.ch/mailman/listinfo/r-help
> >> PLEASE do read the posting guide
> >> http://www.R-project.org/posting-guide.html
> >> and provide commented, minimal, self-contained, reproducible code.
> >
> > ______________________________________________
> > R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
> > https://stat.ethz.ch/mailman/listinfo/r-help
> > PLEASE do read the posting guide
> > http://www.R-project.org/posting-guide.html
> > and provide commented, minimal, self-contained, reproducible code.
>
> ______________________________________________
> R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-
> guide.html
> and provide commented, minimal, self-contained, reproducible code.
Gerrit Eichner
2018-Jan-18 14:58 UTC
[R] effects & lme4: error since original dataframenotfoundWASeffects: error when original data frame is missing
Thanks, John, for your hint! (Unfortunately, I was not aware of this vignette, but I am glad that I seem to habe been on the right track.) Indeed very helpful, in particular of course, the warning regarding the danger of overwriting already existing objects. That danger might be reduced by pre-checking the intended name and if neccessary changing it (somehow ...) automatically. (Have to think about that ...) Best regards -- Gerrit --------------------------------------------------------------------- Dr. Gerrit Eichner Mathematical Institute, Room 212 gerrit.eichner at math.uni-giessen.de Justus-Liebig-University Giessen Tel: +49-(0)641-99-32104 Arndtstr. 2, 35392 Giessen, Germany Fax: +49-(0)641-99-32109 http://www.uni-giessen.de/eichner --------------------------------------------------------------------- Am 17.01.2018 um 15:55 schrieb Fox, John:> Dear Gerrit, > > This issue is discussed in a vignette in the car package (both for functions in the car and effects packages): vignette("embedding", package="car") . The solution suggested there is the essentially the one that you used. > > I hope this helps, > John > > ----------------------------- > John Fox, Professor Emeritus > McMaster University > Hamilton, Ontario, Canada > Web: socialsciences.mcmaster.ca/jfox/ > > >> -----Original Message----- >> From: R-help [mailto:r-help-bounces at r-project.org] On Behalf Of Gerrit >> Eichner >> Sent: Wednesday, January 17, 2018 9:50 AM >> To: r-help at r-project.org >> Subject: Re: [R] effects & lme4: error since original data frame >> notfoundWASeffects: error when original data frame is missing >> >> Third "hi" in this regard and for the archives: >> >> I found a (maybe "dirty") workaround which at least does what I need by >> creating a copy of the required data frame in the .GlobalEnv by means of >> assign: >> >> foo <- function() { >> assign("X", sleepstudy, pos = 1) >> fm <- lmer(Reaction ~ Days + (Days | Subject), data = X) >> Effect("Days", fm) >> } >> >> >> Hth -- Gerrit >> >> --------------------------------------------------------------------- >> Dr. Gerrit Eichner Mathematical Institute, Room 212 >> gerrit.eichner at math.uni-giessen.de Justus-Liebig-University Giessen >> Tel: +49-(0)641-99-32104 Arndtstr. 2, 35392 Giessen, Germany >> Fax: +49-(0)641-99-32109 http://www.uni-giessen.de/eichner >> --------------------------------------------------------------------- >> >> Am 17.01.2018 um 15:02 schrieb Gerrit Eichner: >>> Hi, again, >>> >>> I have to modify my query since my first (too simple) example doesn't >>> reflect my actual problem. Second try: >>> >>> When asking Effect() inside a function to compute an effect of an >>> lmer-fit which uses a data frame local to the body of the function, as >>> in the following example (simplifying my actual application), I get >>> the "Error in is.data.frame(data) : >>> object 'X' not found": >>> >>> > foo <- function() { >>> +? X <- sleepstudy >>> +? fm <- lmer(Reaction ~ Days + (Days | Subject), data = X) >>> +? Effect("Days", fm) >>> + } >>> >>> > foo() >>> >>> Error in is.data.frame(data) : object 'X' not found >>> >>> >>> With lm-objects there is no problem: >>> >>> > foo2 <- function() { >>> +?? X <- sleepstudy >>> +?? fm <- lm(Reaction ~ Days, data = X) >>> +?? Effect("Days", fm) >>> + } >>> >>> > foo2() >>> >>> .... >>> >>> Any idea how to work around this problem? >>> Once again, thx in advance! >>> >>> ?Regards? --? Gerrit >>> >>> PS: > sessionInfo() >>> R version 3.4.2 (2017-09-28) >>> Platform: x86_64-w64-mingw32/x64 (64-bit) Running under: Windows >= 8 >>> x64 (build 9200) >>> >>> Matrix products: default >>> >>> locale: >>> [1] >> LC_COLLATE=German_Germany.1252? LC_CTYPE=German_Germany.1252 [3] >>> LC_MONETARY=German_Germany.1252 LC_NUMERIC=C [5] >>> LC_TIME=German_Germany.1252 >>> >>> attached base packages: >>> [1] stats???? graphics? grDevices utils???? datasets? methods?? base >>> >>> other attached packages: >>> [1] effects_4.0-0?? carData_3.0-0?? lme4_1.1-14???? Matrix_1.2-11 >>> car_2.1-5 [6] lattice_0.20-35 >>> >>> loaded via a namespace (and not attached): >>> ?[1] Rcpp_0.12.13?????? MASS_7.3-47??????? grid_3.4.2 >>> MatrixModels_0.4-1 >>> ?[5] nlme_3.1-131?????? survey_3.32-1????? SparseM_1.77 minqa_1.2.4 >>> ?[9] nloptr_1.0.4?????? splines_3.4.2????? tools_3.4.2 >>> survival_2.41-3 [13] pbkrtest_0.4-7???? yaml_2.1.14 >>> parallel_3.4.2 compiler_3.4.2 [17] colorspace_1.3-2?? mgcv_1.8-22 >>> nnet_7.3-12 quantreg_5.33 >>> >>> --------------------------------------------------------------------- >>> Dr. Gerrit Eichner?????????????????? Mathematical Institute, Room 212 >>> gerrit.eichner at math.uni-giessen.de?? Justus-Liebig-University Giessen >>> Tel: +49-(0)641-99-32104????????? Arndtstr. 2, 35392 Giessen, Germany >>> Fax: +49-(0)641-99-32109??????????? http://www.uni-giessen.de/eichner >>> --------------------------------------------------------------------- >>> >>> Am 17.01.2018 um 10:55 schrieb Gerrit Eichner: >>>> Hello, everyody, >>>> >>>> when asking, e.g., Effect() to compute the effects of a fitted, e.g., >>>> linear model after having deleted the data frame from the workspace >>>> for which the model was obtained an error is reported: >>>> >>>> ?> myair <- airquality >>>> ?> fm <- lm(Ozone ~ Temp, data = myair) >>>> ?> rm(myair) >>>> ?> Effect("Temp", fm) >>>> Error in eval(model$call$data, envir) : object 'myair' not found >>>> >>>> Has anybody a better "workaround" for this than, e.g., explicitly >>>> saving the fitted model object fm together with its original >>>> environment or just the data needed frame (maybe in a list like >>>> fm.plus.origdata <- list(fm, myair = myair)) to be able to restore >>>> the original environemt (or at least the needed opriginal data >>>> frame) of the time when fm was created? >>>> >>>> Thx for any hint! >>>> >>>> ??Regards? --? Gerrit >>>> >>>> --------------------------------------------------------------------- >>>> Dr. Gerrit Eichner?????????????????? Mathematical Institute, Room 212 >>>> gerrit.eichner at math.uni-giessen.de?? Justus-Liebig-University Giessen >>>> Tel: +49-(0)641-99-32104????????? Arndtstr. 2, 35392 Giessen, Germany >>>> Fax: +49-(0)641-99-32109??????????? http://www.uni-giessen.de/eichner >>>> >>>> ______________________________________________ >>>> R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see >>>> https://stat.ethz.ch/mailman/listinfo/r-help >>>> PLEASE do read the posting guide >>>> http://www.R-project.org/posting-guide.html >>>> and provide commented, minimal, self-contained, reproducible code. >>> >>> ______________________________________________ >>> R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see >>> https://stat.ethz.ch/mailman/listinfo/r-help >>> PLEASE do read the posting guide >>> http://www.R-project.org/posting-guide.html >>> and provide commented, minimal, self-contained, reproducible code. >> >> ______________________________________________ >> R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see >> https://stat.ethz.ch/mailman/listinfo/r-help >> PLEASE do read the posting guide http://www.R-project.org/posting- >> guide.html >> and provide commented, minimal, self-contained, reproducible code.
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