If you would like to view the PDF tables, then use the code below that matches your operating system:
Source: Show me the pdf already | R-bloggers By Will
# under Unix type operating sytem
pdf <- getOption("pdfviewer", default = "")
f <- system.file("pdf", "Mannings_n_Values.pdf", package = "iemiscdata")
system2(pdf, args = f)Source: Show me the pdf already | R-bloggers By Will
# under MS Windows
f <- system.file("pdf", "Mannings_n_Values.pdf", package = "iemiscdata")
shell.exec(normalizePath(f))Source: Opening PDF within R studio using file.show - Stack Overflow – rensa
# under OS X
f <- system.file("pdf", "Mannings_n_Values.pdf", package = "iemiscdata")
system2("open", args = f, wait = FALSE)