Re: [R] converting a character string to an object name
Seconded!
On March 29, 2019 11:33:01 AM PDT, Rui Barradas wrote:
>Hello,
>
>I recommend you save them all in a list. It's a much better idea than
>to
>have length(names(wb)) objects in the globalenv.
>Something like the following would read them all in one go.
>
>xls_list <- lapply(seq_along(names(wb))[-1], function(i){
> read.xlsx(wb, sheet = i)
>})
>
>names(xls_list) <- gsub(" ", "_", names(wb)[-1])
>
>
>Then, you can process the list members with the *apply() functions, as
>in
>
>result_list <- lapply(xls_list, some_function, arg2, arg3)
>
>The first function argument is the sheet, arg2, etc, would be other
>function arguments.
>
>Hope this helps,
>
>Rui Barradas
>
>Às 13:07 de 29/03/2019, Assa Yeroslaviz escreveu:
>> I am trying to automate the way i read my tables. I have an Excel
>sheet I'm
>> reading using openxlsx package. The sheet contains over 30 sheets, i
>would
>> like to save each of them as separate objects.
>>
>> my workflow for now is as such:
>>
>> wb <- loadWorkbook(xlsxFile =
>"Output/Up_Down_Regulated_Gene_Lists.xlsx")
>> NAMES <- gsub(pattern = " ", replacement = "_", x = names(wb))
>> [1] "KO1_vs._WT_up""KO2_vs._WT_down" "KO3_vs._WT_up"
>> "KO1_vs._WT_down" "KO2_vs._WT_up" ...
>> for (i in 2:length(names(wb)) ){
>>tmp <- read.xlsx(wb, sheet = i)
>>
>> ... Here I would like to have each sheet read in and sacved as a
>separate
>> data.frame.
>>
>> }
>>
>> Is there a way to read for each sheet the name from names(wb) and
>convert
>> it to a name for the object?
>>
>> something like this
>> The object KO1_vs._WT_up will save the first sheet with the same
>name
>> The object KO2_vs._WT_down will save the second sheet.
>> etc.
>>
>> Any ideas?
>>
>> thanks
>> Assa
>>
>> [[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.
>>
>
>__
>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.
--
Sent from my phone. Please excuse my brevity.
__
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Re: [R] converting a character string to an object name
Hello,
I recommend you save them all in a list. It's a much better idea than to
have length(names(wb)) objects in the globalenv.
Something like the following would read them all in one go.
xls_list <- lapply(seq_along(names(wb))[-1], function(i){
read.xlsx(wb, sheet = i)
})
names(xls_list) <- gsub(" ", "_", names(wb)[-1])
Then, you can process the list members with the *apply() functions, as in
result_list <- lapply(xls_list, some_function, arg2, arg3)
The first function argument is the sheet, arg2, etc, would be other
function arguments.
Hope this helps,
Rui Barradas
Às 13:07 de 29/03/2019, Assa Yeroslaviz escreveu:
I am trying to automate the way i read my tables. I have an Excel sheet I'm
reading using openxlsx package. The sheet contains over 30 sheets, i would
like to save each of them as separate objects.
my workflow for now is as such:
wb <- loadWorkbook(xlsxFile = "Output/Up_Down_Regulated_Gene_Lists.xlsx")
NAMES <- gsub(pattern = " ", replacement = "_", x = names(wb))
[1] "KO1_vs._WT_up""KO2_vs._WT_down" "KO3_vs._WT_up"
"KO1_vs._WT_down" "KO2_vs._WT_up" ...
for (i in 2:length(names(wb)) ){
tmp <- read.xlsx(wb, sheet = i)
... Here I would like to have each sheet read in and sacved as a separate
data.frame.
}
Is there a way to read for each sheet the name from names(wb) and convert
it to a name for the object?
something like this
The object KO1_vs._WT_up will save the first sheet with the same name
The object KO2_vs._WT_down will save the second sheet.
etc.
Any ideas?
thanks
Assa
[[alternative HTML version deleted]]
__
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
__
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
Re: [R] converting a character string to an object name
I think you want ?assign
Bert Gunter
"The trouble with having an open mind is that people keep coming along and
sticking things into it."
-- Opus (aka Berkeley Breathed in his "Bloom County" comic strip )
On Fri, Mar 29, 2019 at 10:39 AM Assa Yeroslaviz wrote:
> I am trying to automate the way i read my tables. I have an Excel sheet I'm
> reading using openxlsx package. The sheet contains over 30 sheets, i would
> like to save each of them as separate objects.
>
> my workflow for now is as such:
>
> wb <- loadWorkbook(xlsxFile = "Output/Up_Down_Regulated_Gene_Lists.xlsx")
> NAMES <- gsub(pattern = " ", replacement = "_", x = names(wb))
> [1] "KO1_vs._WT_up""KO2_vs._WT_down" "KO3_vs._WT_up"
> "KO1_vs._WT_down" "KO2_vs._WT_up" ...
> for (i in 2:length(names(wb)) ){
> tmp <- read.xlsx(wb, sheet = i)
>
> ... Here I would like to have each sheet read in and sacved as a separate
> data.frame.
>
> }
>
> Is there a way to read for each sheet the name from names(wb) and convert
> it to a name for the object?
>
> something like this
> The object KO1_vs._WT_up will save the first sheet with the same name
> The object KO2_vs._WT_down will save the second sheet.
> etc.
>
> Any ideas?
>
> thanks
> Assa
>
> [[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
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
Re: [R] converting a character string to an object name
On Fri, 29 Mar 2019 14:07:16 +0100 Assa Yeroslaviz wrote: > Is there a way to read for each sheet the name from names(wb) and > convert it to a name for the object? See `get` and `assign` functions for a way to use strings as object names. Generally, it might not be a good idea to do that (what if your spreadsheet contains a sheet named `c` or `q`, or `data.frame`?). If you want to save yourself some typing, consider using `with` or `within`, though they suffer from similar problems. -- Best regards, Ivan __ 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.
