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David L Carlson

2017-May-11 21:17 UTC

[R] Error: invalid type (closure) for the variable 'time' - object specific trend

What Rui said, but as important, you have four columns in your data called
"town", "year", "revenue", and "supply".
You do not have a column called "time".

-------------------------------------
David L Carlson
Department of Anthropology
Texas A&M University
College Station, TX 77840-4352

-----Original Message-----
From: R-help [mailto:r-help-bounces at r-project.org] On Behalf Of Rui Barradas
Sent: Thursday, May 11, 2017 3:36 PM
To: Tobias Christoph <s3tochri at uni-bayreuth.de>; Duncan Murdoch
<murdoch.duncan at gmail.com>; r-help at r-project.org
Subject: Re: [R] Error: invalid type (closure) for the variable 'time' -
object specific trend

Hello,

A closure is, like you say, a function.
At an R prompt try:

 > typeof(time)
[1] "closure"

So like Duncan suggested rename 'time', for instance capitalize it 
'Time'. That should do it.

Hope this helps,

Rui Barradas



Em 11-05-2017 21:20, Tobias Christoph escreveu:> Hey Duncan,
>
> thank you very much for your quick reply.
>
> _My data used:_
>
> 1st column(town):1,1,1,1,1,1,1,1,1,1,1,1,2,2,2,...........,11
>
> 2nd column(year):1,2,3,4,5,6,7,8,9,10,11,12,1,2,3.......,12
>
> 3rd column (revenue):
>
> 4th colum (supply):
>
> I have now renamed my colums and did the regression again. Now there is
> a problem with R-squared, as it is the sum of 1 now with no given std.
> error and t-value. This is probably due to the fact, that I try to
> estimate more parameters than data.
>
> To add a linear trend I found the following formular:*lm(y ~ x1 +
> factor(ccode)*time, data=df)*
>
> I try to I decode it for and use it for my regression: *plm(log(revenue)
> ~ log(supply) + factor(town)*time, data=R_Test_log_Neu)*
>
> When I do this regression I will get the original error: "invalid type
> (closure) for the variable 'time' - object specific trend"
>
> With the notation"time" not my colum is meant, but probably the
command
> "time" in R.
>
> Can you follow my thoughts?
>
> Tobi
>
>
>
>
>
>
> Am 11.05.2017 um 17:23 schrieb Duncan Murdoch:
>> Duncan Murdoch
>
> ______________________________________________
> 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.

Tobias Christoph

2017-May-12 14:40 UTC

head link

[R] Error: invalid type (closure) for the variable 'time' - object specific trend

Hey guys,

thanks a lot for your tips. The regression is finally running. As you 
said, I had to integrate the column "year" in the function
"time" in R.

So I used the following formula: *plm(log(revenue) ~ log(supply) + 
factor(town)*time(year), data=R_Test_log_Neu)*

So I have now sucessfully added a linear trend to my regression model? 
Another question that concernes me is how to add a quadratic trend 
instead of a linear trend. Can I just square the column "year"?

Enjoy your weekend,

Toby

_My results see below:_

Balanced Panel: n=11, T=12, N=132

Residuals :
     Min.  1st Qu.   Median  3rd Qu.     Max.
-0.09610 -0.02370 -0.00152  0.01980  0.14000

Coefficients :
                             Estimate Std. Error t-value  Pr(>|t|)
log(supply)               -0.0080702  0.0133675 -0.6037  0.547411
factor(town)2:time(year)  -0.0063245  0.0053744 -1.1768  0.242100
factor(town)3:time(year)   0.0295522  0.0056776  5.2050 1.053e-06 ***
factor(town)4:time(year)   0.0062191  0.0054152  1.1485  0.253549
factor(town)5:time(year)   0.0159028  0.0054954  2.8939  0.004681 **
factor(town)6:time(year)   0.0237112  0.0055395  4.2804 4.316e-05 ***
factor(town)7:time(year)   0.0410007  0.0055734  7.3565 5.576e-11 ***
factor(town)8:time(year)   0.0239085  0.0053751  4.4480 2.271e-05 ***
factor(town)9:time(year)   0.0242342  0.0056855  4.2625 4.619e-05 ***
factor(town)10:time(year)  0.0105890  0.0053302  1.9866  0.049733 *
factor(town)11:time(year)  0.0095270  0.0056354  1.6906  0.094065 .
---
Signif. codes:  0 ?***? 0.001 ?**? 0.01 ?*? 0.05 ?.? 0.1 ? ? 1

Total Sum of Squares:    0.46388
Residual Sum of Squares: 0.2001
R-Squared:      0.56863
Adj. R-Squared: 0.4292
F-statistic: 11.8637 on 11 and 99 DF, p-value: 7.3065e-14



Am 11.05.2017 um 23:17 schrieb David L Carlson:> What Rui said, but as important, you have four columns in your data called
"town", "year", "revenue", and "supply".
You do not have a column called "time".
>
> -------------------------------------
> David L Carlson
> Department of Anthropology
> Texas A&M University
> College Station, TX 77840-4352
>
> -----Original Message-----
> From: R-help [mailto:r-help-bounces at r-project.org] On Behalf Of Rui
Barradas
> Sent: Thursday, May 11, 2017 3:36 PM
> To: Tobias Christoph <s3tochri at uni-bayreuth.de>; Duncan Murdoch
<murdoch.duncan at gmail.com>; r-help at r-project.org
> Subject: Re: [R] Error: invalid type (closure) for the variable
'time' - object specific trend
>
> Hello,
>
> A closure is, like you say, a function.
> At an R prompt try:
>
>   > typeof(time)
> [1] "closure"
>
> So like Duncan suggested rename 'time', for instance capitalize it
> 'Time'. That should do it.
>
> Hope this helps,
>
> Rui Barradas
>
>
>
> Em 11-05-2017 21:20, Tobias Christoph escreveu:
>> Hey Duncan,
>>
>> thank you very much for your quick reply.
>>
>> _My data used:_
>>
>> 1st column(town):1,1,1,1,1,1,1,1,1,1,1,1,2,2,2,...........,11
>>
>> 2nd column(year):1,2,3,4,5,6,7,8,9,10,11,12,1,2,3.......,12
>>
>> 3rd column (revenue):
>>
>> 4th colum (supply):
>>
>> I have now renamed my colums and did the regression again. Now there is
>> a problem with R-squared, as it is the sum of 1 now with no given std.
>> error and t-value. This is probably due to the fact, that I try to
>> estimate more parameters than data.
>>
>> To add a linear trend I found the following formular:*lm(y ~ x1 +
>> factor(ccode)*time, data=df)*
>>
>> I try to I decode it for and use it for my regression:
*plm(log(revenue)
>> ~ log(supply) + factor(town)*time, data=R_Test_log_Neu)*
>>
>> When I do this regression I will get the original error: "invalid
type
>> (closure) for the variable 'time' - object specific trend"
>>
>> With the notation"time" not my colum is meant, but probably
the command
>> "time" in R.
>>
>> Can you follow my thoughts?
>>
>> Tobi
>>
>>
>>
>>
>>
>>
>> Am 11.05.2017 um 17:23 schrieb Duncan Murdoch:
>>> Duncan Murdoch
>> ______________________________________________
>> 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.
>

	[[alternative HTML version deleted]]

Rui Barradas

2017-May-12 17:15 UTC

head link

[R] Error: invalid type (closure) for the variable 'time' - object specific trend

Hello,

I have never used plm but the standard way of adding a quadratic term is

I(time(year)^2)

Hope this helps,

Rui Barradas

Em 12-05-2017 15:40, Tobias Christoph escreveu:> Hey guys,
>
> thanks a lot for your tips. The regression is finally running. As you
> said, I had to integrate the column "year" in the function
"time" in R.
>
> So I used the following formula: *plm(log(revenue) ~ log(supply) +
> factor(town)*time(year), data=R_Test_log_Neu)*
>
> So I have now sucessfully added a linear trend to my regression model?
> Another question that concernes me is how to add a quadratic trend
> instead of a linear trend. Can I just square the column "year"?
>
> Enjoy your weekend,
>
> Toby
>
> _My results see below:_
>
> Balanced Panel: n=11, T=12, N=132
>
> Residuals :
>      Min.  1st Qu.   Median  3rd Qu.     Max.
> -0.09610 -0.02370 -0.00152  0.01980  0.14000
>
> Coefficients :
>                              Estimate Std. Error t-value  Pr(>|t|)
> log(supply)               -0.0080702  0.0133675 -0.6037  0.547411
> factor(town)2:time(year)  -0.0063245  0.0053744 -1.1768  0.242100
> factor(town)3:time(year)   0.0295522  0.0056776  5.2050 1.053e-06 ***
> factor(town)4:time(year)   0.0062191  0.0054152  1.1485  0.253549
> factor(town)5:time(year)   0.0159028  0.0054954  2.8939  0.004681 **
> factor(town)6:time(year)   0.0237112  0.0055395  4.2804 4.316e-05 ***
> factor(town)7:time(year)   0.0410007  0.0055734  7.3565 5.576e-11 ***
> factor(town)8:time(year)   0.0239085  0.0053751  4.4480 2.271e-05 ***
> factor(town)9:time(year)   0.0242342  0.0056855  4.2625 4.619e-05 ***
> factor(town)10:time(year)  0.0105890  0.0053302  1.9866  0.049733 *
> factor(town)11:time(year)  0.0095270  0.0056354  1.6906  0.094065 .
> ---
> Signif. codes:  0 ?***? 0.001 ?**? 0.01 ?*? 0.05 ?.? 0.1 ? ? 1
>
> Total Sum of Squares:    0.46388
> Residual Sum of Squares: 0.2001
> R-Squared:      0.56863
> Adj. R-Squared: 0.4292
> F-statistic: 11.8637 on 11 and 99 DF, p-value: 7.3065e-14
>
>
>
> Am 11.05.2017 um 23:17 schrieb David L Carlson:
>> What Rui said, but as important, you have four columns in your data
called "town", "year", "revenue", and
"supply". You do not have a column called "time".
>>
>> -------------------------------------
>> David L Carlson
>> Department of Anthropology
>> Texas A&M University
>> College Station, TX 77840-4352
>>
>> -----Original Message-----
>> From: R-help [mailto:r-help-bounces at r-project.org] On Behalf Of Rui
Barradas
>> Sent: Thursday, May 11, 2017 3:36 PM
>> To: Tobias Christoph<s3tochri at uni-bayreuth.de>; Duncan
Murdoch<murdoch.duncan at gmail.com>;r-help at r-project.org
>> Subject: Re: [R] Error: invalid type (closure) for the variable
'time' - object specific trend
>>
>> Hello,
>>
>> A closure is, like you say, a function.
>> At an R prompt try:
>>
>>   > typeof(time)
>> [1] "closure"
>>
>> So like Duncan suggested rename 'time', for instance capitalize
it
>> 'Time'. That should do it.
>>
>> Hope this helps,
>>
>> Rui Barradas
>>
>>
>>
>> Em 11-05-2017 21:20, Tobias Christoph escreveu:
>>> Hey Duncan,
>>>
>>> thank you very much for your quick reply.
>>>
>>> _My data used:_
>>>
>>> 1st column(town):1,1,1,1,1,1,1,1,1,1,1,1,2,2,2,...........,11
>>>
>>> 2nd column(year):1,2,3,4,5,6,7,8,9,10,11,12,1,2,3.......,12
>>>
>>> 3rd column (revenue):
>>>
>>> 4th colum (supply):
>>>
>>> I have now renamed my colums and did the regression again. Now
there is
>>> a problem with R-squared, as it is the sum of 1 now with no given
std.
>>> error and t-value. This is probably due to the fact, that I try to
>>> estimate more parameters than data.
>>>
>>> To add a linear trend I found the following formular:*lm(y ~ x1 +
>>> factor(ccode)*time, data=df)*
>>>
>>> I try to I decode it for and use it for my regression:
*plm(log(revenue)
>>> ~ log(supply) + factor(town)*time, data=R_Test_log_Neu)*
>>>
>>> When I do this regression I will get the original error:
"invalid type
>>> (closure) for the variable 'time' - object specific
trend"
>>>
>>> With the notation"time" not my colum is meant, but
probably the command
>>> "time" in R.
>>>
>>> Can you follow my thoughts?
>>>
>>> Tobi
>>>
>>>
>>>
>>>
>>>
>>>
>>> Am 11.05.2017 um 17:23 schrieb Duncan Murdoch:
>>>> Duncan Murdoch
>>> ______________________________________________
>>> 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
guidehttp://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>>
>

David Winsemius

2017-May-12 20:12 UTC

head link

[R] Error: invalid type (closure) for the variable 'time' - object specific trend

> On May 12, 2017, at 7:40 AM, Tobias Christoph <s3tochri at
uni-bayreuth.de> wrote:
> 
> Hey guys,
> 
> thanks a lot for your tips. The regression is finally running. As you 
> said, I had to integrate the column "year" in the function
"time" in R.
> 
> So I used the following formula: *plm(log(revenue) ~ log(supply) + 
> factor(town)*time(year), data=R_Test_log_Neu)*
> 
> So I have now sucessfully added a linear trend to my regression model? 
> Another question that concernes me is how to add a quadratic trend 
> instead of a linear trend. Can I just square the column "year"?
It's difficult to respond to these questions. It appears you have either
created a function named `time` or loaded a package that contains such a named
function. Several of the origianl responders thought it might be a misspelling
of an existing column name.

One might guess from the output that `time` represents a linear value from a
factor-variable across the values of the "year" column. You should
probably NOT "just square column 'year'". That will probably
construct non-orthogonal dependencies between "time" and
"time"^2. The usual method in ordinary linear regression  is to use
the "poly" function. In your case however the puzzle about what that
`time` function looks like prevents much further comment.

To support informed discussion on this matter you MUST provide:

--- code that includes all the needed library() calls to load packages or to
build a time function.
--- str(R_Test_log_Neu)


-- 
David> 
> Enjoy your weekend,
> 
> Toby
> 
> _My results see below:_
> 
> Balanced Panel: n=11, T=12, N=132
> 
> Residuals :
>     Min.  1st Qu.   Median  3rd Qu.     Max.
> -0.09610 -0.02370 -0.00152  0.01980  0.14000
> 
> Coefficients :
>                             Estimate Std. Error t-value  Pr(>|t|)
> log(supply)               -0.0080702  0.0133675 -0.6037  0.547411
> factor(town)2:time(year)  -0.0063245  0.0053744 -1.1768  0.242100
> factor(town)3:time(year)   0.0295522  0.0056776  5.2050 1.053e-06 ***
> factor(town)4:time(year)   0.0062191  0.0054152  1.1485  0.253549
> factor(town)5:time(year)   0.0159028  0.0054954  2.8939  0.004681 **
> factor(town)6:time(year)   0.0237112  0.0055395  4.2804 4.316e-05 ***
> factor(town)7:time(year)   0.0410007  0.0055734  7.3565 5.576e-11 ***
> factor(town)8:time(year)   0.0239085  0.0053751  4.4480 2.271e-05 ***
> factor(town)9:time(year)   0.0242342  0.0056855  4.2625 4.619e-05 ***
> factor(town)10:time(year)  0.0105890  0.0053302  1.9866  0.049733 *
> factor(town)11:time(year)  0.0095270  0.0056354  1.6906  0.094065 .
> ---
> Signif. codes:  0 ?***? 0.001 ?**? 0.01 ?*? 0.05 ?.? 0.1 ? ? 1
> 
> Total Sum of Squares:    0.46388
> Residual Sum of Squares: 0.2001
> R-Squared:      0.56863
> Adj. R-Squared: 0.4292
> F-statistic: 11.8637 on 11 and 99 DF, p-value: 7.3065e-14
> 
> 
> 
> Am 11.05.2017 um 23:17 schrieb David L Carlson:
>> What Rui said, but as important, you have four columns in your data
called "town", "year", "revenue", and
"supply". You do not have a column called "time".
>> 
>> -------------------------------------
>> David L Carlson
>> Department of Anthropology
>> Texas A&M University
>> College Station, TX 77840-4352
>> 
>> -----Original Message-----
>> From: R-help [mailto:r-help-bounces at r-project.org] On Behalf Of Rui
Barradas
>> Sent: Thursday, May 11, 2017 3:36 PM
>> To: Tobias Christoph <s3tochri at uni-bayreuth.de>; Duncan
Murdoch <murdoch.duncan at gmail.com>; r-help at r-project.org
>> Subject: Re: [R] Error: invalid type (closure) for the variable
'time' - object specific trend
>> 
>> Hello,
>> 
>> A closure is, like you say, a function.
>> At an R prompt try:
>> 
>>> typeof(time)
>> [1] "closure"
>> 
>> So like Duncan suggested rename 'time', for instance capitalize
it
>> 'Time'. That should do it.
>> 
>> Hope this helps,
>> 
>> Rui Barradas
>> 
>> 
>> 
>> Em 11-05-2017 21:20, Tobias Christoph escreveu:
>>> Hey Duncan,
>>> 
>>> thank you very much for your quick reply.
>>> 
>>> _My data used:_
>>> 
>>> 1st column(town):1,1,1,1,1,1,1,1,1,1,1,1,2,2,2,...........,11
>>> 
>>> 2nd column(year):1,2,3,4,5,6,7,8,9,10,11,12,1,2,3.......,12
>>> 
>>> 3rd column (revenue):
>>> 
>>> 4th colum (supply):
>>> 
>>> I have now renamed my colums and did the regression again. Now
there is
>>> a problem with R-squared, as it is the sum of 1 now with no given
std.
>>> error and t-value. This is probably due to the fact, that I try to
>>> estimate more parameters than data.
>>> 
>>> To add a linear trend I found the following formular:*lm(y ~ x1 +
>>> factor(ccode)*time, data=df)*
>>> 
>>> I try to I decode it for and use it for my regression:
*plm(log(revenue)
>>> ~ log(supply) + factor(town)*time, data=R_Test_log_Neu)*
>>> 
>>> When I do this regression I will get the original error:
"invalid type
>>> (closure) for the variable 'time' - object specific
trend"
>>> 
>>> With the notation"time" not my colum is meant, but
probably the command
>>> "time" in R.
>>> 
>>> Can you follow my thoughts?
>>> 
>>> Tobi
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 
>>> Am 11.05.2017 um 17:23 schrieb Duncan Murdoch:
>>>> Duncan Murdoch
>>> ______________________________________________
>>> 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.
>> 
> 
> 
> 	[[alternative HTML version deleted]]
> 
> ______________________________________________
> 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.
David Winsemius
Alameda, CA, USA

peter dalgaard

2017-May-12 21:23 UTC

head link

[R] Error: invalid type (closure) for the variable 'time' - object specific trend

> On 12 May 2017, at 16:40 , Tobias Christoph <s3tochri at
uni-bayreuth.de> wrote:
> 
> Hey guys,
> 
> thanks a lot for your tips. The regression is finally running. As you 
> said, I had to integrate the column "year" in the function
"time" in R.
> 
> So I used the following formula: *plm(log(revenue) ~ log(supply) + 
> factor(town)*time(year), data=R_Test_log_Neu)*
Um, that might not do what I think you think it does. time() gives you the
"vector of times at which a time series was sampled". If you feed it
any regular vector, it just gives the numbers 1:n, witness
> time(rnorm(20)) [1]  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15 16 17 18 19 20
attr(,"tsp")
[1]  1 20  1

I suspect you just want "year" in the formula.
> 
> So I have now sucessfully added a linear trend to my regression model? 
> Another question that concernes me is how to add a quadratic trend 
> instead of a linear trend. Can I just square the column "year"?
In principle, yes, but as others have pointed out, centering the variable may be
a good idea, for numerical stability.

-pd
> 
> Enjoy your weekend,
> 
> Toby
> 
> _My results see below:_
> 
> Balanced Panel: n=11, T=12, N=132
> 
> Residuals :
>     Min.  1st Qu.   Median  3rd Qu.     Max.
> -0.09610 -0.02370 -0.00152  0.01980  0.14000
> 
> Coefficients :
>                             Estimate Std. Error t-value  Pr(>|t|)
> log(supply)               -0.0080702  0.0133675 -0.6037  0.547411
> factor(town)2:time(year)  -0.0063245  0.0053744 -1.1768  0.242100
> factor(town)3:time(year)   0.0295522  0.0056776  5.2050 1.053e-06 ***
> factor(town)4:time(year)   0.0062191  0.0054152  1.1485  0.253549
> factor(town)5:time(year)   0.0159028  0.0054954  2.8939  0.004681 **
> factor(town)6:time(year)   0.0237112  0.0055395  4.2804 4.316e-05 ***
> factor(town)7:time(year)   0.0410007  0.0055734  7.3565 5.576e-11 ***
> factor(town)8:time(year)   0.0239085  0.0053751  4.4480 2.271e-05 ***
> factor(town)9:time(year)   0.0242342  0.0056855  4.2625 4.619e-05 ***
> factor(town)10:time(year)  0.0105890  0.0053302  1.9866  0.049733 *
> factor(town)11:time(year)  0.0095270  0.0056354  1.6906  0.094065 .
> ---
> Signif. codes:  0 ?***? 0.001 ?**? 0.01 ?*? 0.05 ?.? 0.1 ? ? 1
> 
> Total Sum of Squares:    0.46388
> Residual Sum of Squares: 0.2001
> R-Squared:      0.56863
> Adj. R-Squared: 0.4292
> F-statistic: 11.8637 on 11 and 99 DF, p-value: 7.3065e-14
> 
> 
> 
> Am 11.05.2017 um 23:17 schrieb David L Carlson:
>> What Rui said, but as important, you have four columns in your data
called "town", "year", "revenue", and
"supply". You do not have a column called "time".
>> 
>> -------------------------------------
>> David L Carlson
>> Department of Anthropology
>> Texas A&M University
>> College Station, TX 77840-4352
>> 
>> -----Original Message-----
>> From: R-help [mailto:r-help-bounces at r-project.org] On Behalf Of Rui
Barradas
>> Sent: Thursday, May 11, 2017 3:36 PM
>> To: Tobias Christoph <s3tochri at uni-bayreuth.de>; Duncan
Murdoch <murdoch.duncan at gmail.com>; r-help at r-project.org
>> Subject: Re: [R] Error: invalid type (closure) for the variable
'time' - object specific trend
>> 
>> Hello,
>> 
>> A closure is, like you say, a function.
>> At an R prompt try:
>> 
>>> typeof(time)
>> [1] "closure"
>> 
>> So like Duncan suggested rename 'time', for instance capitalize
it
>> 'Time'. That should do it.
>> 
>> Hope this helps,
>> 
>> Rui Barradas
>> 
>> 
>> 
>> Em 11-05-2017 21:20, Tobias Christoph escreveu:
>>> Hey Duncan,
>>> 
>>> thank you very much for your quick reply.
>>> 
>>> _My data used:_
>>> 
>>> 1st column(town):1,1,1,1,1,1,1,1,1,1,1,1,2,2,2,...........,11
>>> 
>>> 2nd column(year):1,2,3,4,5,6,7,8,9,10,11,12,1,2,3.......,12
>>> 
>>> 3rd column (revenue):
>>> 
>>> 4th colum (supply):
>>> 
>>> I have now renamed my colums and did the regression again. Now
there is
>>> a problem with R-squared, as it is the sum of 1 now with no given
std.
>>> error and t-value. This is probably due to the fact, that I try to
>>> estimate more parameters than data.
>>> 
>>> To add a linear trend I found the following formular:*lm(y ~ x1 +
>>> factor(ccode)*time, data=df)*
>>> 
>>> I try to I decode it for and use it for my regression:
*plm(log(revenue)
>>> ~ log(supply) + factor(town)*time, data=R_Test_log_Neu)*
>>> 
>>> When I do this regression I will get the original error:
"invalid type
>>> (closure) for the variable 'time' - object specific
trend"
>>> 
>>> With the notation"time" not my colum is meant, but
probably the command
>>> "time" in R.
>>> 
>>> Can you follow my thoughts?
>>> 
>>> Tobi
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 
>>> Am 11.05.2017 um 17:23 schrieb Duncan Murdoch:
>>>> Duncan Murdoch
>>> ______________________________________________
>>> 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.
>> 
> 
> 
> 	[[alternative HTML version deleted]]
> 
> ______________________________________________
> 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.
-- 
Peter Dalgaard, Professor,
Center for Statistics, Copenhagen Business School
Solbjerg Plads 3, 2000 Frederiksberg, Denmark
Phone: (+45)38153501
Office: A 4.23
Email: pd.mes at cbs.dk  Priv: PDalgd at gmail.com

R help - May 2017 - Error: invalid type (closure) for the variable 'time' - object specific trend

[R] Error: invalid type (closure) for the variable 'time' - object specific trend

[R] Error: invalid type (closure) for the variable 'time' - object specific trend

[R] Error: invalid type (closure) for the variable 'time' - object specific trend

[R] Error: invalid type (closure) for the variable 'time' - object specific trend

[R] Error: invalid type (closure) for the variable 'time' - object specific trend