Inspecting and visualizing gaps/blanks and structure in large dataframes

Question

I have a large dataframe (400000 x 50) that I want to visually inspect for structure and blanks/gaps.

Is there an existing library or ggplot2 function, that can spit

Answer 1

Give this a shot.

require(Amelia)
data(freetrade)
missmap(freetrade)

It won't do the red, blue green, but it gets your grid. I'd also give the VIM package a shot as it provides numerous options for visualizing missing data.

http://www.statistik.tuwien.ac.at/forschung/CS/CS-2008-1complete.pdf