Thanks. I have been going through the PDL docs. While I'm finding lots of information for working with data in pdls, I'm seeing little on getting data in and out. So let give you my specific situation:

I'm working with a 3d perl array containing data that I'm pulling out of a database. I calculate various statistics and do some transformations of the data before re-inserting it into the database in a different table. I want to try using PDL for doing the statistics and transformations steps.

I'm coming across things in the PDL docs that look like the could be taking me in the right direction, but it seems like it mostly already assumes a high level of knowledge. The more basic sections of the documentation (e.g. PDL::Impatient) don't cover the input/output stuff that I need in any kind of detail.