What is the unit used for --area and --columns options?

[ThomasA]

I am trying to guess what kind of units are used for the --area and --columns options. It has been going OK so far with the --columns option by trial and error, but just guessing wildly for the --area option mostly gets me into this trouble:

Exception in thread "main" java.util.NoSuchElementException
    at java.util.ArrayList$Itr.next(ArrayList.java:854)
    at java.util.Collections.min(Collections.java:635)
    at technology.tabula.Page.getArea(Page.java:67)
    at technology.tabula.CommandLineApp.extractTables(CommandLineApp.java:145)
    at technology.tabula.CommandLineApp.main(CommandLineApp.java:60)

[jazzido]

Hi @ThomasA,

I guess you resolved the issue by now, but in the benefit of people finding this issue: the units are PDF Units