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R - Importing 'xlsx' package to my own package doesn't work
I made some package, named aa, in some computer in which installations go well.
When I try to install my own package in another computer, then the following error message occurs:
==> Rcmd.exe INSTALL --no-multiarch --with-keep.source aa
* installing to library 'C:/Users/aaaaaaaaaaa/Documents/R/win-library/3.5'
ERROR: dependencies 'knitr', 'rstan', 'readxl', 'testdat', 'openxlsx', 'xlsx', 'gridExtra' are not available for package 'aa'
* removing 'C:/Users/aaaaaaaaaaa/Documents/R/win-library/3.5/aa'
In R CMD INSTALL
Exited with status 1.
By my hand, once I installed the package knitr which is described in above error, then error message is the following from which the package knitr disappears:
==> Rcmd.exe INSTALL --no-multiarch --with-keep.source aa
* installing to library 'C:/Users/aaaaaaaaaaa/Documents/R/win-library/3.5'
ERROR: dependencies 'rstan', 'readxl', 'testdat', 'openxlsx', 'xlsx', 'gridExtra' are not available for package 'aa'
* removing 'C:/Users/aaaaaaaaaaa/Documents/R/win-library/3.5/aa'
In R CMD INSTALL
Exited with status 1.
What I want to know is that the packages used in my own packages are automatically installed or not.
Maybe you can try the easier way like this :
Add the following code in your .R file
tryCatch({
library(knitr)
}, error = function(e) {
install.packages("knitr")
library(knitr)
})
Or
if("knitr" %in% installed.packages()[,1]){
library(knitr)
}else{
install.packages("knitr")
library(knitr)
}