visual structure of a data.frame: locations of NAs and much more

Question

I want to represent the structure of a data frame (or matrix, or data.table whatever) on a single plot with color-coding. I guess that could be very useful for many people handl

Answer 1

Have you encountered the CSV fingerprint service? It creates a similar image, althought not with all the details you have outlined above, and it's not based on R. There is an R version of a similar idea at R-ohjelmointi.org, but the text is in Finnish. The main function is csvSormenjalki(). Maybe that could be adapted further to fulfill your whole vision?