Hv (For Hot Views) is a library for developing graphical user interfaces for scientific and engineering applications. It is based on X, Xt and Motif and has been tested on most Unix flavours. Use Hv o represent physical devices (such as nuclear physics detectors) and allow the user to interact with the representations. In order to do this it must maintain world coordinates in addition to the usual screen coordinates, this makes it useful for other non-pixel based graphics such as scientific plotting and drawing maps and overlays
