effects: error when original data frame is missing

Previous Topic Next Topic
 
classic Classic list List threaded Threaded
5 messages Options
Reply | Threaded
Open this post in threaded view
|

effects: error when original data frame is missing

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
[hidden email]   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

______________________________________________
[hidden email] 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.
Reply | Threaded
Open this post in threaded view
|

Re: effects & lme4: error since original data frame not found WASeffects: error when original data frame is missing

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
[hidden email]   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
> [hidden email]   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
>
> ______________________________________________
> [hidden email] 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.

______________________________________________
[hidden email] 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.
Reply | Threaded
Open this post in threaded view
|

Re: effects & lme4: error since original data frame notfoundWASeffects: error when original data frame is missing

Gerrit Eichner
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
[hidden email]   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
> [hidden email]   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
>> [hidden email]   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
>>
>> ______________________________________________
>> [hidden email] 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.
>
> ______________________________________________
> [hidden email] 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.

______________________________________________
[hidden email] 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.
Reply | Threaded
Open this post in threaded view
|

Re: effects & lme4: error since original data frame notfoundWASeffects: error when original data frame is missing

Fox, John
In reply to this post by Gerrit Eichner
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:[hidden email]] On Behalf Of Gerrit
> Eichner
> Sent: Wednesday, January 17, 2018 9:50 AM
> To: [hidden email]
> 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
> [hidden email]   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
> > [hidden email]   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
> >> [hidden email]   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
> >>
> >> ______________________________________________
> >> [hidden email] 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.
> >
> > ______________________________________________
> > [hidden email] 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.
>
> ______________________________________________
> [hidden email] 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.
______________________________________________
[hidden email] 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.
Reply | Threaded
Open this post in threaded view
|

Re: effects & lme4: error since original dataframenotfoundWASeffects: error when original data frame is missing

Gerrit Eichner
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
[hidden email]   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:[hidden email]] On Behalf Of Gerrit
>> Eichner
>> Sent: Wednesday, January 17, 2018 9:50 AM
>> To: [hidden email]
>> 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
>> [hidden email]   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
>>> [hidden email]   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
>>>> [hidden email]   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
>>>>
>>>> ______________________________________________
>>>> [hidden email] 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.
>>>
>>> ______________________________________________
>>> [hidden email] 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.
>>
>> ______________________________________________
>> [hidden email] 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.

______________________________________________
[hidden email] 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.