This article describes a generalized system for dealing with multidimensional arrays of data. It lets you transform and extract slices of data along various axes with very little code, in the style of the programming language APL. And you're not limited to numerical data; you can generalize systems such as this to any kind of tabular data.
by Greg Travis
July 13, 2005
t's really not surprising that the first "killer app" in the world of personal computing was the spreadsheet. After all, a table filled with numbers is one of the simplest and most useful metaphors for displaying and analyzing data.
Arrays of numbers are a cornerstone of numerical programming. They are so central to it that a number of languages (notably APL and its successors, J and K) have been created that specialize in multidimensional arrays. Proponents of these languages claim that array languages allow for much cleaner, comprehensible code.
It's quick, easy and you get access to all the articles on DevX.
This registration/login is to allow you to read articles on devx.com. Already a member?
To become a member of DevX.com create your Member Profile by completing the form below. Membership is free!
t's really not surprising that the first "killer app" in the world of personal computing was the spreadsheet. After all, a table filled with numbers is one of the simplest and most useful metaphors for displaying and analyzing data.
