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IBM OpenDX
OpenDX stands for Open Data Explorer and is IBM's scientific data visualization software. It can handle complex domains (such as a mechanical gear or a human brain) along with measured or computed data. The data may be scalar (such as the concentration of a chemical agent in the brain), vector or tensor fields (like the displacement or strain tensor fields when the gear is in action) at different points of the object. The points at which data is measured don't have to be equally spaced, and not need to be homogeneously spaced. The project started in 1991 as ''Visualization Data Explorer''.
''OpenDX'' can produce 3D images with the quantities plotted as color or gray-scale coded, or as vectors, streamlines and ribbons. It allows the object to be sliced to obtain a view of the internal structure, and then represent the data on this slice plane as a height-coded graph. It can rotate the object to provide a view of the data from any angle, and allows animations of this motion to be made.
== Graphical User Interface ==
''OpenDX'' is based on the Motif widget toolkit on top of the X Window System. Its graphical user interface has a wide variety of interactors, both direct and indirect. Direct interactors allow the user to directly manipulate images (e.g. rotate or zoom). Indirect interactors (dials, switches, buttons, sliders) enable the user to control various aspects of her visualization. Interactors are ''smarter'' because they are data-driven. Interactors are auto-ranging and self-limiting. They examine the data and, depending on its type, will determine the minimum and maximum of the data, or create a list for an option menu based on the data. The user can even set the label of the interactor based on some aspect of the data (e.g., metadata).
The data-driven concept is not simply for sliders, dials and option menus. It also applies to vector interactors. These will reconfigure themselves based on the dimensionality of the data. They will also auto-range themselves based on the maximum and minimum of each vector component.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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