tm readPDF: Error in file(con, “r”) : cannot open the connection

Question

I have tried the example code recommended in the tm::readPDF documentation:

library(tm)

if(all(file.exists(Sys.which(c(\"pdfinfo\", \"pdftotext\"))))) {
            


        

Answer 1

Did some debugging and see it fails in tm:::pdfinfo():

status <- system2("pdfinfo", shQuote(normalizePath(file)), 
        stdout = outfile)

This command doesn't create the outfile. According to Redirect system2 stdout to a file on windows this is a bug!