Dependencies of R Packages
This one-way table gives the type-token distribution of the number of dependencies declared in 4983 packages listed on CRAN on January 17, 2014.
data(Depends)
The format is: 'table' int [1:15(1d)] 986 1347 993 685 375 298 155 65 32 19 ... - attr(*, "dimnames")=List of 1 ..$ Depends: chr [1:15] "0" "1" "2" "3" ...
data(Depends) plot(Depends, xlab="Number of Dependencies", ylab="Number of R Packages", lwd=8) ## Not run: # The code below, from Joseph Rickert, downloads and tabulates the data p <- as.data.frame(available.packages(),stringsAsFactors=FALSE) names(p) pkgs <- data.frame(p[,c(1,4)]) # Pick out Package names and Depends row.names(pkgs) <- NULL # Get rid of row names pkgs <- pkgs[complete.cases(pkgs[,2]),] # Remove NAs pkgs$Depends2 <-strsplit(pkgs$Depends,",") # split list of Depends pkgs$numDepends <- as.numeric(lapply(pkgs$Depends2,length)) # Count number of dependencies in list zeros <- c(rep(0,dim(p)[1] - dim(pkgs)[1])) # Account for packages with no dependencies Deps <- as.vector(c(zeros,pkgs$numDepends)) # Set up to tablate Depends <- table(Deps) ## End(Not run)
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