313 research outputs found

    User's manual for EZPLOT version 5.5: A FORTRAN program for 2-dimensional graphic display of data

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    EZPLOT is a computer applications program that converts data resident on a file into a plot displayed on the screen of a graphics terminal. This program generates either time history or x-y plots in response to commands entered interactively from a terminal keyboard. Plot parameters consist of a single independent parameter and from one to eight dependent parameters. Various line patterns, symbol shapes, axis scales, text labels, and data modification techniques are available. This user's manual describes EZPLOT as it is implemented on the Ames Research Center, Dryden Research Facility ELXSI computer using DI-3000 graphics software tools

    A proposed C language binding for the Graphical Kernel System-3D

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    This thesis introduces a proposed C language binding definition for the International Standards Organization\u27s draft international standard of the Graphical Kernel System-3D. This work augments the earlier C language binding of the two dimensional version of the Graphical Kernel System commonly known as GKS. The proposed function interface will provide a basis for, if not a final, C language binding for the three dimensional version of the Graphical Kernel System --Abstract, page ii

    Computer graphics standards for man modelling

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    The human being is arguably one of the most nonstandard and unpredictable components of all systems. Thus, in many application areas of computer-aided design, there is a need to model the physical aspects of humans alongside models of workplace and equipment. The paper briefly describes the Sammie systems, a long-established and succesful computer-aided design system that has fulfilled this requirement across a wide range of application areas. Recently, much development work has been aimed at incorporating a range of graphics and data-exchange standards into the Sammie software. These experiences are described, together with observations on their apparent limitations and advantages. In particular, the Programmer's Hierarchical Interactive Graphics System (Phigs), its extension to Phigs-Plus, the Computer Graphics Metafile (CGM), the Initial Graphics Exchange Specification (iges), and X-Windows with the Phigs extension (Pex) are considered

    GKS in C : (preprint)

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    Survey of currently available high-resolution raster graphics systems

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    Presented are data obtained on high-resolution raster graphics engines currently available on the market. The data were obtained through survey responses received from various vendors and also from product literature. The questionnaire developed for this survey was basically a list of characteristics desired in a high performance color raster graphics system which could perform real-time aircraft simulations. Several vendors responded to the survey, with most reporting on their most advanced high-performance, high-resolution raster graphics engine

    A Program Visualization System That Supports the Program Understanding Process.

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    The goal of this research is to provide a graphical system that supports the program understanding process by representing the program\u27s control flow, the code and the identifiers local to a specific point within the program. By having more information local to the point of interest, the programmer can maintain continuity in developing program understanding. The programmer can see loops, procedure calls, and other structures with respect to their execution order and can view them in the environment or the context in which they will execute. The Peec system supplies a graphical representation of the program\u27s control flow in which the control structures are represented as tiers. The tiers are arranged in a three-dimensional space representing the program\u27s operational flow. The body of the procedure or function is nested within the reference tier so that the programmer views the routine local to its reference point. Also, a list of live identifiers is displayable for the current tier element. The advantage is that the routine\u27s text and the identifier list are local to the area of study and the programmer does not have to look elsewhere for the program text and the identifier definition. The programmer can maintain a continuity in developing program understanding using information local to the point of interest. The Peec system consists of the Peec compiler which transforms a Pascal program into tier and identifier information, and the Peec environment for modeling the program\u27s operational flow image. The Peec environment provides the programmer many interactive capabilities. These capabilities consist of browsing the flow model, displaying text, displaying identifiers and transforming the three-dimensional flow model into appropriate views. These features are aimed at assisting the programmer in the processing of developing program understanding

    LIVE Update: Archaeological Courseware Using Interactive Video

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    Computer graphics standards for man modelling

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    Les Vies du livre, passées, présentes et à venir The Lives of the Book, Past, Present and to Come Edité par Nathalie Collé-Bak, Monica Latham, David Ten Eyck http://www.lcdpu.fr/livre/?GCOI=27000100341160&fa=details DESCRIPTION Cet ouvrage bilingue se propose d'explorer des questions liées à la production, à la distribution et à la réception du livre en pays francophones et anglophones. Combinant recherche universitaire et témoignages de professionnels du livre de nationalités diverses et de ..
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