Thank you for your help. I'll check this out.Kai
On Monday, September 19, 2022 at 11:47:11 AM PDT, Bert Gunter
<bgunter.4...@gmail.com> wrote:
I haven't tracked what went before, but your syntax here is totally messed up:
for (i in seq_len(nrow(total_name)))
{
with(
total_name[i, ],
{
file.rename(total_name$orig, total_name$target)
}
)
}
Also, you don't need looping because file.rename is already vectorized -- you
need to read the Help file more carefully. So something like this should do
what you want:
with(total_name, file.rename (orig, target))
where orig and target should be character (not factor) columns in your data
frame.
Cheers,Bert
On Mon, Sep 19, 2022 at 10:38 AM Kai Yang via R-help <r-help@r-project.org>
wrote:
Hi Rui,I put original file names and target file names into data frame:
total_name. I can use
file.rename("out_1.pdf", "abc_title.pdf")
to rename a single file. But I hope to use loop to complete the task. So I
write a code below:
for (i in seq_len(nrow(total_name)))
{
with(
total_name[i, ],
{
file.rename(total_name$orig, total_name$target)
}
)
}
But I got error message:
Error in file.rename(total_name$orig, total_name$target) :
invalid 'from' argument
I think the problem happen due to quotation problem. Do you know how to fix it?
Thanks,
Kai On Friday, September 16, 2022 at 08:32:53 PM PDT, Rui Barradas
<ruipbarra...@sapo.pt> wrote:
Hello,
My understanding of the problem is different, the files' first row is
not tabular data, I might be wrong but it seems to me that it's
something like
first row [of] file1.txt [is]:
abc.txt
file2.txt:
bed.txt
etc.
That's why the sapply loop reads one datum only and exits.
Hope this helps,
Rui Barradas
Às 02:29 de 17/09/2022, Ebert,Timothy Aaron escreveu:
> The syntax might not be quite right, but why not something like
> file.rename(colnames(dataframe)[1]) -- Using colnames to get the names of the
> columns that are in the first row, selecting the first element from
> colnames() and setting the file name equal to that.
>
> Do a for loop using current file names in some folder, and save to a new
> folder.
>
> Tim
>
> -----Original Message-----
> From: R-help <r-help-boun...@r-project.org> On Behalf Of Kai Yang via R-help
> Sent: Friday, September 16, 2022 1:52 PM
> To: R-help Mailing List <r-help@r-project.org>; Rui Barradas
> <ruipbarra...@sapo.pt>
> Subject: Re: [R] rename files in R
>
> [External Email]
>
> Hello,Here is the example:
> file name first row file1.txt abc.txt file2.txt bed.txt
>file3.txt gogo.txt . . file1243.txt last.txt
> I want to use loop because I need to read the first row information for first
> file, and then rename the file, then go to next file. I'm not sure if this is
> right way to approach my goal. Any suggestion will be appreciated. Thanks,
> Kai On Friday, September 16, 2022 at 10:38:32 AM PDT, Rui Barradas
> <ruipbarra...@sapo.pt> wrote:
>
> Hello,
>
> Please post the first row of 2 or 3 files and the expected result.
>
> You can rename files with ?file.rename. This function is vectorized its on
> arguments so you do not need a loop, only the source and destination
> filenames. Both vectors should have the same length, if not strange things
> will occur including data loss.
>
> Hope this helps,
>
> Rui Barradas
>
> Às 18:26 de 16/09/2022, Kai Yang via R-help escreveu:
>> Hello,I have a lot of files with not meaningful name, such as:
>> file1.txt, file2.txt ...... I need to rename them using the
>> information from the first row of the files. Now I can get the
>> information from the first row of each file. Now, I need know how to
>> rename them in R (using loop?). Thank you for your helpKai
>>
>>
>> [[alternative HTML version deleted]]
>>
>> ______________________________________________
>> R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
>> https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fstat
>> .ethz.ch%2Fmailman%2Flistinfo%2Fr-help&data=05%7C01%7Ctebert%40ufl
>> .edu%7C559ca95ca7d34937799a08da980c3995%7C0d4da0f84a314d76ace60a62331e
>> 1b84%7C0%7C0%7C637989475519163868%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4w
>> LjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C
>> &sdata=lPW2XrQntw3V7eJmxkaoOXK75%2FO1hWgRv7FO3%2B5O3OQ%3D&rese
>> rved=0 PLEASE do read the posting guide
>> https://nam10.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.r
>> -project.org%2Fposting-guide.html&data=05%7C01%7Ctebert%40ufl.edu%
>> 7C559ca95ca7d34937799a08da980c3995%7C0d4da0f84a314d76ace60a62331e1b84%
>> 7C0%7C0%7C637989475519320101%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwM
>> DAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&
>> sdata=%2FaSxvb47qFp7Mo6MFlCEQcvinHvV%2FWA%2Brs3keoNuTqk%3D&reserve
>> d=0 and provide commented, minimal, self-contained, reproducible code.
>
> [[alternative HTML version deleted]]
>
> ______________________________________________
> R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
> https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fstat.ethz.ch%2Fmailman%2Flistinfo%2Fr-help&data=05%7C01%7Ctebert%40ufl.edu%7C559ca95ca7d34937799a08da980c3995%7C0d4da0f84a314d76ace60a62331e1b84%7C0%7C0%7C637989475519320101%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=tCreTbW2QEMePdooZNVmtpl6kKSVMXv9E0oIBYBTMBQ%3D&reserved=0
> PLEASE do read the posting guide
> https://nam10.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.r-project.org%2Fposting-guide.html&data=05%7C01%7Ctebert%40ufl.edu%7C559ca95ca7d34937799a08da980c3995%7C0d4da0f84a314d76ace60a62331e1b84%7C0%7C0%7C637989475519320101%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=%2FaSxvb47qFp7Mo6MFlCEQcvinHvV%2FWA%2Brs3keoNuTqk%3D&reserved=0
> and provide commented, minimal, self-contained, reproducible code.
[[alternative HTML version deleted]]
______________________________________________
R-help@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@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.
