R devel - Jun 2024 - write.csv problems

?s 17:02 de 28/06/2024, Spencer Graves escreveu:
> Hello, All:
> 
> 
>  ????? I'm getting strange errors with write.csv with some objects of 
> class c('findFn', 'data.frame'). Consider the following:
> 
> 
> df1 <- data.frame(x=1)
> class(df1) <- c('findFn', 'data.frame')
> write.csv(df1, 'df1.csv')
> # Error in x$Package : $ operator is invalid for atomic vectors
> 
> df2 <- data.frame(a=letters[1:2],
>  ????? b=as.POSIXct('2024-06-28'))
> class(df2) <- c('findFn', 'data.frame')
> write.csv(df2, 'df1.csv')
> # Error in tapply(rep(1, nrow(x)), xP, length) :
> #? arguments must have same length
> 
> 
>  ????? "write.csv" works with some objects of class
c('findFn',
> 'data.frame') but not others. I have 'findFn' object with
5264 rows that
> fails with the following error:
> 
> 
> Error in `[<-.data.frame`(`*tmp*`, needconv, value = list(Count = 
> c("83",? :
>  ? replacement element 1 has 526 rows, need 5264
> 
> 
>  ????? I have NOT yet been able to reproduce this error with a smaller 
> example. However, starting 'write.csv' with something like the
following
> should fix all these problems:
> 
> 
> if(is.data.frame(x)) class(x) <- 'data.frame'
> 
> 
>  ????? Comments?
>  ????? Thanks for all your work to help improve the quality of 
> statistical software available to the world.
> 
> 
>  ????? Spencer Graves
> 
> ______________________________________________
> R-devel at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-devel
Hello,

I don't know if this answers to question.
I wasn't able to reproduce errors but warnings, yes I was.

A way of not giving errors or warnings is to call write.csv at the end 
of a pipe such as the following.


df1 <- findFn("mean")
df1 |> as.data.frame() |> write.csv("df1.csv")


This solution is equivalent to the code proposed in the OP without the 
need for a change in base R.

Hope this helps,

Rui Barradas


-- 
Este e-mail foi analisado pelo software antiv?rus AVG para verificar a presen?a
de v?rus.
www.avg.com

Hi, Rui et al.:


On 6/29/24 14:24, Rui Barradas wrote:
> ?s 17:02 de 28/06/2024, Spencer Graves escreveu:
>> Hello, All:
>>
>>
>> ?????? I'm getting strange errors with write.csv with some objects
of
>> class c('findFn', 'data.frame'). Consider the
following:
>>
>>
>> df1 <- data.frame(x=1)
>> class(df1) <- c('findFn', 'data.frame')
>> write.csv(df1, 'df1.csv')
>> # Error in x$Package : $ operator is invalid for atomic vectors
>>
>> df2 <- data.frame(a=letters[1:2],
>> ?????? b=as.POSIXct('2024-06-28'))
>> class(df2) <- c('findFn', 'data.frame')
>> write.csv(df2, 'df1.csv')
>> # Error in tapply(rep(1, nrow(x)), xP, length) :
>> #? arguments must have same length
>>
>>
>> ?????? "write.csv" works with some objects of class
c('findFn',
>> 'data.frame') but not others. I have 'findFn' object
with 5264 rows
>> that fails with the following error:
>>
>>
>> Error in `[<-.data.frame`(`*tmp*`, needconv, value = list(Count = 
>> c("83",? :
>> ?? replacement element 1 has 526 rows, need 5264
>>
>>
>> ?????? I have NOT yet been able to reproduce this error with a smaller 
>> example. However, starting 'write.csv' with something like the 
>> following should fix all these problems:
>>
>>
>> if(is.data.frame(x)) class(x) <- 'data.frame'
>>
>>
>> ?????? Comments?
>> ?????? Thanks for all your work to help improve the quality of 
>> statistical software available to the world.
>>
>>
>> ?????? Spencer Graves
>>
>> ______________________________________________
>> R-devel at r-project.org mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-devel
> Hello,
> 
> I don't know if this answers to question.
> I wasn't able to reproduce errors but warnings, yes I was.
> 
> A way of not giving errors or warnings is to call write.csv at the end 
> of a pipe such as the following.
> 
> 
> df1 <- findFn("mean")
> df1 |> as.data.frame() |> write.csv("df1.csv")
> 
> 
> This solution is equivalent to the code proposed in the OP without the 
> need for a change in base R.

	  Thanks for this. Ivan Krylov informed me that this was NOT a problem 
with base R but with "[.findFn". I fixed that and got help from Ivan 
fixing another problem with "sos". Now it is officially "on its
way to
CRAN."
> 
> Hope this helps,

	  Yes. I'm not yet facile with "|>", but I'm learning.


	  Spencer Graves
> 
> Rui Barradas
> 
>