Cannot install library(xlsx) in R and look for an alternative

5
votes

I use R version 3.0.3. I was not able to install library(xlsx). Error message:

Loading required package: rJava
Error : .onLoad failed in loadNamespace() for 'rJava', details:
call: inDL(x, as.logical(local), as.logical(now), ...)
error: unable to load shared object 'C:/Program Files/R/R-3.0.3/library/rJava/libs/x64/rJava.dll':

LoadLibrary failure:  The specified module could not be found.

I then tried to install rjava on its own. Got the error message below:

library("rJava", lib.loc="C:/Program Files/R/R-3.0.3/library") Error : .onLoad failed in loadNamespace() for 'rJava', details: call: inDL(x, as.logical(local), as.logical(now), ...) error: unable to load shared object 'C:/Program Files/R/R-3.0.3/library/rJava/libs/x64/rJava.dll': LoadLibrary failure: The specified module could not be found.

Is there another way to load excel file in R?

Thanks,

6
rxlsxrjava
possible duplicate of Importing .xlsx file into R – hrbrmstr
Have a look at this blog post on rJava r-statistics.com/2012/08/… Make sure you have the right version of java. – Tyler Rinker
May be it's time to test the new openxlsx package which doens't rely on Java cran.r-project.org/web/packages/openxlsx/index.html – dickoa
@dickoa Nice find Didn't know this existed. +1 – Tyler Rinker
@dickoa package ‘openxlsx’ is not available (for R version 3.0.3) :( :( :( – PMa

6 Answers

9
votes

This problem is generally caused by x86 vs x64 bit differences between the R session and the install Java edition. By default Java installs the x86 version and you have to search for the x64 version. if you look at the version of Java you have installed and then open your R session to the same if your using R studio you can click on Tools.GlobalOptions and then select the version you need. ;-)

9
votes

Here are some possible solutions:

  1. Install 64-bit version of Java. Here is the download link of Java.
  2. Re-install rJava.

  3. Manually set the directory of your Java location by setting it before loading the library

    Sys.setenv(JAVA_HOME="C:\\Program Files\\Java\\jre7") # for 64-bit version Sys.setenv(JAVA_HOME="C:\\Program Files (x86)\\Java\\jre7") # for 32-bit version library(rJava)

Source: here

2
votes

For mac user, installing Java for OS X 2014-001 works for me https://support.apple.com/kb/DL1572?locale=en_US

0
votes

See this and this. The last one is "The hard way: package xlsx" but it may still help you.

0
votes

For Windows 10 Pro users 64 bit OS, use

Sys.setenv(JAVA_HOME="C:\\Program Files\\Java\\jre1.8.0_144")
-1
votes

For MAC OS X follow these steps in order:

  1. Use this command in the Terminal: sudo R CMD javareconf

  2. Restart BaseR and RStudio...

  3. in RStudio console: install.packages("xlConnect")

  4. in RStudio console: library(xlConnect)

  5. in RStudio console: library(xlsx)

Problem solved!