Applying public access programming techniques to astronomical image display

Eric Mandel

doi:10.1117/12.234670

8 March 1996 Applying public access programming techniques to astronomical image display

Eric Mandel

Proceedings Volume 2656, Visual Data Exploration and Analysis III; (1996) https://doi.org/10.1117/12.234670
Event: Electronic Imaging: Science and Technology, 1996, San Jose, CA, United States

Abstract

The X Public Access (XPA) mechanism allows an Xt program to define named public access points through which data and commands can be exchanged with other programs. We will discuss our design goals for XPA, the technical challenges we faced--including extensions to the Xt selection implementation--and the user interface and application programming interface that we developed to meet these challenges. We also will describe our application of XPA to a new version of the popular SAOimage astronomical image display program. XPA makes possible external control of the program's main function, including image display, image zoom and pan, colormap manipulation, cursor/region definition, and frame selection. It also supports `public access' to internal algorithms such as image file access and scaling. Finally, we will describe how XPA is used to support user-configurable analysis of image data and bi- directional communication with other processes.

Citation Download Citation

Eric Mandel "Applying public access programming techniques to astronomical image display", Proc. SPIE 2656, Visual Data Exploration and Analysis III, (8 March 1996); https://doi.org/10.1117/12.234670

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