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GrandPerspective is open source software for Mac OS X used for disk space analysis in a graphical treemap. [2] [3] [4] In 2010, the application was ranked at number six on Cult of Mac's "50 Mac Essentials" list. [5]
It is free for all uses, but donations are suggested. [2] No source code is available. Notable features include: A treemap represents how disk capacity is allocated. [4] Filters (based on file name, age, size, etc.) enable the user to focus the visualisation on files and folders of interest. [4]
To create a treemap, one must define a tiling algorithm, that is, a way to divide a region into sub-regions of specified areas. Ideally, a treemap algorithm would create regions that satisfy the following criteria: A small aspect ratio—ideally close to one. Regions with a small aspect ratio (i.e., fat objects) are easier to perceive. [2]
WinDirStat is a free and open-source graphical disk usage analyzer for Microsoft Windows.It presents a sub-tree view with disk-use percentage alongside a usage-sorted list of file extensions that is interactively integrated with a colorful graphical display (a treemap).
Darwin is the core Unix-like operating system of macOS, iOS, watchOS, tvOS, iPadOS, audioOS, visionOS, and bridgeOS.It previously existed as an independent open-source operating system, first released by Apple Inc. in 2000.
Mac OS X, Microsoft Windows: Free if used with PixelNovel web storage, 30-day trial with commercial upgrade otherwise Adobe Photoshop: English svn 1.0 July 7, 2009;
The Finder uses a view of the file system that is rendered using a desktop metaphor; that is, the files and folders are represented as appropriate icons. It uses a similar interface to Apple's Safari browser, where the user can click on a folder to move to it and move between locations using "back" and "forward" arrow buttons.
Let be a metric space with distance function .Let be a set of indices and let () be a tuple (indexed collection) of nonempty subsets (the sites) in the space .The Voronoi cell, or Voronoi region, , associated with the site is the set of all points in whose distance to is not greater than their distance to the other sites , where is any index different from .