In RStudio 1.2 you can brush the histogram to do something like this; for instance, to query for >= 3, just drag from 3 onwards:
(this is from View(c(1,2,3,4,5)))
Could you also add an option to filter Date and Posixct (and such) objects in the RStudio data viewer? As of now I sometimes cast dates to characters to get at least some filter options.
We don't currently have this capability yet (but feel free to file a request!)