xlconnect

I'm a bit impressed because I couldn't find an answer so far. I have a small R script that is loading data from one source and writing a few dozens Excel files from it. The problem now is: those files need a password protection. Currently my script is using the XLConnect library to save the excel files. The script is something like this: # Load data from source source = <connection string to source> dataFromSource = <read from source> # Process for (data in dataFromSource) { wb = loadWorkbook( paste("myWorkbook", sourceName, ".xlsx"), create = TRUE) createSheet(wb, name = "sheet") <put data

I'm trying to load a hefty Excel workbook (.xlsm format, ~30 mb) that has a large number of array calcs. > wb1 <- loadWorkbook("Mar_SP_20130227_V6.1.xlsm") Error: POIXMLException (Java): java.lang.reflect.InvocationTargetException But I am able to successfully load a values-only/no-macro version of the workbook. > wb2 <- loadWorkbook("Mar_SP_20130227_V6.1_VALUES_ONLY.xlsx") > wb2 [1] "Mar_SP_20130227_V6.1_VALUES_ONLY.xlsx" What could be causing the error? From the maintainer's website I can see that there can be issues with workbooks containing array calcs or unsupported formula functions, but

XLConnect is, as the manual describes it, "a package that allows for reading, writing and manipulation of Microsoft Excel files from within R". Installation on Windows and Linux is straightforward. Simply tell R to install.packages("XLConnect") , and you're done. On OS X you need to use install.packages("XLConnect", type="source") , the installation instructions say. Trying this under OS 10.8.2, R output a number of error messages. I post them here, so Google can send people with similar problems to this Q and A. For a solution to the problem, scroll down. R output: > install.packages(

I am trying to read value from a .xlsx file using openxlsx package in R . In simple words, I need to write a row of data, which then populates some output cell that has to be read back in R. I will share an example to better explain the problem. Initial state of the .xlsx file: I'm now trying to write new values to the cell : A2:A3 = c("c", 5). So ideally, I'm expecting A6 = 15 Below is the code used : require(openxlsx) path <- "C:/path_to_file/for_SO1.xlsx" input_row <- c("c", 5) # Load workbook; create if not existing wb <- loadWorkbook(path) # createSheet(wb, name = "1") writeData(wb, sheet

I have loaded a workbook into R and read in the worksheets using xlConnect, but I was wondering if there was a way of extracting the names of the sheets perhaps in a vector? So far my code is: dataIn<-loadWorkbook(file.path(filenames[1],sep="")) lst = readWorksheet(dataIn, sheet = getSheets(dataIn), startRow=1, startCol=1, header=TRUE) ...and I want to extract the sheet names of the sheets in lst . You are looking for getSheets Returns all worksheet names in a workbook. Another really nice package developed by the folks at RStudio is readxl . It's easy to get the excel sheet names with the

This question already has an answer here: “Out of Memory Error (Java)” when using R and XLConnect package 7 answers I have to read a file in a list of folders and save data in R. I use following code for my test data and it works. When I use the code for the actual data then I get this error Error: OutOfMemoryError (Java): GC overhead limit exceeded Called from: top level This is what I have done for my test data parent.folder <- "C:/Users/sandesh/Desktop/test_R" sub.folder <- list.dirs(parent.folder, recursive =TRUE)[-1] file <- file.path(sub.folder, "sandesh1.xlsx") library(xlsx) library