I had everything working with R and RStudio, but then I moved the folders when cleaning up my computer directories & files. Now I'm getting the error message below.
Should R and RStudio be installed under Program Files or Program Files (x86)? Should I have two libPaths?
install.packages("C:/Users/kevin/Downloads/fpp_0.5.zip", repos = NULL)
## Warning in install.packages :
## package ‘C:/Users/kevin/Downloads/fpp_0.5.zip’
## is not available (for R version 3.0.0)
## Installing package into ‘C:/Users/kevin/Documents/R/win-library/3.0’
## (as ‘lib’ is unspecified)
## package ‘fpp’ successfully unpacked and MD5 sums checked
library("fpp", lib.loc="C:/Users/kevin/Documents/R/win-library/3.0")
Loading required package: forecast
## Error in loadNamespace(j <- i[[1L]], c(lib.loc, .libPaths()), versionCheck = vI[[j]]) :
## there is no package called ‘colorspace’
## Error: package ‘forecast’ could not be loaded
When you install the package using the RStudio package installer or directly from CRAN, it doesn't install the dependencies ("fracdiff", "Rcpp", "RcppArmadillo" and "colorspace") and hence, R keeps throwing the load namespace error. Installing the package through, automatically installs all the dependencies and solves this problem.
install.packages("forecast",
repos = c("http://rstudio.org/_packages",
"http://cran.rstudio.com"))
The last time I encountered a very similar problem, I used this code which I got somewhere:
install.packages("package's name", repos=c("http://rstudio.org/_packages", "http://cran.rstudio.com"))
simply put your package's name in the quotation marks.
Hope this helps.
Use this:
install.packages("colorspace", dependencies = TRUE)
I ran into this problem. It turned out that my .Rprofile had calls to a package that was not installed. Removing these lines allowed installation to proceed normally.
来源：https://stackoverflow.com/questions/16501507/lib-unspecified-error-in-loadnamespace