Hello Mara,
thanks for your answer.
I am working in R server (linux) but I have tried to install it with rtools in my local R and I get the same problem:
install.packages("rtools")
Warning in install.packages :
package ‘rtools’ is not available (for R version 3.5.0)
when I install RSAP on R server with "install.packages("RSAP") i get the follwing error:
install.packages("RSAP")
Installing package into ‘/home/rstudio/R/x86_64-pc-linux-gnu-library/3.3’ (as ‘lib’ is unspecified) Warning in install.packages : package ‘RSAP’ is not available (for R version 3.3.3)
Could this packages not be available for recent versions?
Thanks for help!!