{"id":3574,"date":"2015-08-02T17:20:02","date_gmt":"2015-08-02T22:20:02","guid":{"rendered":"http:\/\/rud.is\/b\/?p=3574"},"modified":"2018-03-10T07:54:36","modified_gmt":"2018-03-10T12:54:36","slug":"two-new-r-packages-qrencoder-passwordrandom","status":"publish","type":"post","link":"https:\/\/rud.is\/b\/2015\/08\/02\/two-new-r-packages-qrencoder-passwordrandom\/","title":{"rendered":"Two New R Packages – qrencoder & passwordrandom"},"content":{"rendered":"

Believe it or not, there are two [1<\/a>] [2<\/a>] questions on @StackOverflowR about how to make QR codes in R. I personally think QR codes are kinda hokey, but who am I to argue with pressing needs of the #rstats<\/code> community? I found libqrencode<\/a> and it’s highly brew<\/code>-able and apt<\/code>-able (probably yum<\/code>-able, too, if you lean that way), so it was super-easy to crank out an Rcpp-based package<\/a> for it.<\/p>\n

There are a few functions in the package, but the following would be my guess as to how most folks would use it (well, two<\/em> folks, anyway):<\/p>\n

library(qrencoder)\nlibrary(raster)\n\npar(mar=c(0,0,0,0))\nimage(qrencode_raster(\"http:\/\/rud.is\/b\"), \n      asp=1, col=c(\"white\", \"black\"), axes=FALSE, \n      xlab=\"\", ylab=\"\")<\/pre>\n
\"README-qr-1\"<\/a><\/p>\n
<\/p>\n