R - How to read last sheet of each excel file? - r

I have multiple excel files that I would like to read into R, however each file has differing number of sheets and I would like to read only the last sheet in each file into R, is there a way to do this? Thanks.

You can first extract the number of sheets and then only access that sheet:
library(readxl)
sheetNr <- length(excel_sheets(filename))
read_excel(filename, sheet = sheetNr)

Related

Is there a better way to read Excel sheets in R than with read_excel?

I have a directory with big Excel files. I am interested in reading only some sheets within those Excel files. To this end, I am using:
readxl::read_excel(filepath, sheet = my_sheet)
However, this is taking long to read, even not too big sheets. Is there any other more efficient function / way to read only some sheets of Excel files in R?

How to check if excel file with multiple sheets contains macros/formulas in R after importing?

Once I have imported excel file with multiple sheets into R I want to check if excel sheets contains any formulas/VBA/macros into it.
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Any help would be appreciated!!!

Batch removing the second sheet from many excel sheets in R?

I have many excel sheets that I need to remove the second sheet before importing them. All files are .xlsx type in one folder and have same format. What kind of function should I use to achieve such?
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How to read macro enabled excel files in R?

I have 2 excel files which have macros in it. The file extension ends with .xlsb and .xlsm. I want to read these files into R and do exactly what excel is doing with these files in terms of data inputs in R. What is the way to go about it?
For example: if the excel file calculates house prices in sheet 2 based on data input in sheet 1, how can the same results for house price calculation be obtained in R?
You might take a look at the R package RDCOMClient:
https://github.com/omegahat/RDCOMClient
Here is a nice example shown:
https://www.r-bloggers.com/2021/07/rdcomclient-read-and-write-excel-and-call-vba-macro-in-r/

how to write multiple dataframe to multiple sheet of one csv excel file in R?

I am trying to write multiple dataframe to a single csv formated file but each in a different sheet of the excel file:
write.csv(dataframe1, file = "file1.csv",row.names=FALSE)
write.csv(dataframe2, file = "file2.csv",row.names=FALSE)
is there any way to specify the sheet along with the csv file in this code and write them all in one file?
thank you in advance,
This is not possible. That is the functionality of csv to be just in one sheet so that you can view it either from notepad or any other such software. If you still try to write it would get over ridden. Just try to open a csv and open a new sheet and just write some values and save it. The values which were already there is erased. one excel file in csv format can have only one sheet.
The xlsx and XLConnect packages will do the trick as well.

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