Mario,
I am certain there are more elegant solutions. This is an effort to make the
process clear by dividing out each transformation used into separate lines.
## Start of code
library(stringi) # This is written in C and C++ (ICU library), is fast, and is
well documented.
filenames <- c("Q_Read_prist#[email protected]", "Q_Read_prist#[email protected]",
"Q_Read_prist#[email protected]", "Q_Read_prist#[email protected]",
"Q_Read_prist#[email protected]", "Q_Read_prist#[email protected]",
"Q_Read_prist#[email protected]", "Q_Read_prist#[email protected]",
"Q_Read_prist#[email protected]", "Q_Read_prist#[email protected]",
"Q_Read_prist#[email protected]", "Q_Read_prist#[email protected]",
"Q_Read_prist#[email protected]", "Q_Read_prist#[email protected]",
"Q_Read_prist#[email protected]", "Q_Read_prist#[email protected]",
"Q_Read_prist#[email protected]", "Q_Read_prist#[email protected]",
"Q_Read_prist#[email protected]")
indx_list <- stri_split_regex(filenames, pattern = "[@.]")
indx <- sapply(indx_list, function(x) {x[[2]]})
filenames_df <- data.frame(file_name = filenames, indx = indx,
stringsAsFactors = FALSE)
filenames_ordered <- filenames_df[order(as.numeric(filenames_df$indx)),
"file_name"]
filenames_ordered
## end of code
Mark
R. Mark Sharp, Ph.D.
Director of Primate Records Database
Southwest National Primate Research Center
Texas Biomedical Research Institute
P.O. Box 760549
San Antonio, TX 78245-0549
Telephone: (210)258-9476
e-mail: [email protected]
> On Dec 4, 2015, at 4:51 AM, BARLAS Marios 247554 <[email protected]> wrote:
>
> Hello everyone,
>
> I am an R rookie and I'm learning as I program.
>
> I am working on a script to process a large amount of data: I read a pattern
> of filenames in the folder I want and import their data
>
> filenames = list.files(path, pattern="*Q_Read_prist*")
>
> myfiles = lapply(filenames, function(x) read.xlsx2(file=x, sheetName="Data",
> header=TRUE, FILENAMEVAR=x))
>
> The problem is that R recognizes the files in a 'non human' order.
>
> Q_Read_prist#[email protected] Q_Read_prist#[email protected]
> Q_Read_prist#[email protected] Q_Read_prist#[email protected]
> Q_Read_prist#[email protected] Q_Read_prist#[email protected]
> Q_Read_prist#[email protected] Q_Read_prist#[email protected]
> Q_Read_prist#[email protected] Q_Read_prist#[email protected]
> Q_Read_prist#[email protected] Q_Read_prist#[email protected]
> Q_Read_prist#[email protected] Q_Read_prist#[email protected]
> Q_Read_prist#[email protected] Q_Read_prist#[email protected]
> Q_Read_prist#[email protected] Q_Read_prist#[email protected]
> Q_Read_prist#[email protected] Q_Read_prist#[email protected]
> Q_Read_prist#[email protected] Q_Read_prist#[email protected]
> Q_Read_prist#[email protected] Q_Read_prist#[email protected]
> Q_Read_prist#[email protected] Q_Read_prist#[email protected]
> Q_Read_prist#[email protected] Q_Read_prist#[email protected]
> Q_Read_prist#[email protected] Q_Read_prist#[email protected]
> Q_Read_prist#[email protected] Q_Read_prist#[email protected]
> Q_Read_prist#[email protected] Q_Read_prist#[email protected]
> Q_Read_prist#[email protected] Q_Read_prist#[email protected]
> Q_Read_prist#[email protected] Q_Read_prist#[email protected]
>
> I tried to order them using order or sort but it doesn' seem to work. I have
> had the same issue in matlab but there I have a function to re-define the
> order in a "correct" way.
>
> Anyone knows of a smart way to sort these guys from 1 to 19 ascending or
> descending?
>
> Thanks in advance,
> Mario
>
> [[alternative HTML version deleted]]
>
> ______________________________________________
> [email protected] 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.
______________________________________________
[email protected] 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.
