error in R while installing packages: problems with shiny or java_home? is it due to opensteetmap?

Question

I'm new with R unfortunately, but i need it to open a specific file which should be a graphical user interface. After the source command:

source("D:\\R\\win-library\\3.5\\muxViz-master\\muxVizGUI.R")

I'm facing this error:

"Installing package into ‘D:/R/win-library/3.5’
(as ‘lib’ is unspecified)

Warning: package ‘shiny’ is in use and will not be installed

Carico il pacchetto richiesto: OpenStreetMap

Error: package or namespace load failed for ‘OpenStreetMap’:
 .onLoad failed in loadNamespace() for 'rJava', details:

  call: fun(libname, pkgname)

  error: JAVA_HOME cannot be determined from the Registry

Installing package into ‘D:/R/win-library/3.5’
(as ‘lib’ is unspecified)

provo con l'URL 'https://cran.stat.unipd.it/bin/windows/contrib/3.5/OpenStreetMap_0.3.3.zip'

Content type 'application/zip' length 2264648 bytes (2.2 MB)
downloaded 2.2 MB

package ‘OpenStreetMap’ successfully unpacked and MD5 sums checked


The downloaded binary packages are in
        C:\Users\Camla\AppData\Local\Temp\RtmpE9NQB2\downloaded_packages

Error in shinyAppDir(x) : App dir must contain either app.R or server.R.".

The contents of this directory come from http://github.com/manlius/muxViz .

Please help.

Answer 1

The last line of muxVizGUI.R is runApp(getwd()) . It expects that your working directory is the same directory in which the ui.R and server.R files are located. You should change to that directory before sourcing the file:

setwd("D:\\R\\win-library\\3.5\\muxViz-master")
source("muxVizGUI.R")