Acknowledgements

NAGgraph

• Displays y(x) as line/marker plot
• Axes labels, annotation, legend
• Optional PostScript output
• Support for multiple data variables
• Choice of interpolation methods
• Hershey fonts used for labelling
• Support for in-string keywords

Ruler

• Samples data from 2D or 3D lattice
• Lookup points arranged in straight line
• User specifies first and last point, either
  • by picking in the display window
  • by using widgets
• Outputs
  • interpolated lattice
  • geometry of line and endpoints

Examples

Atomic potential energy

• Three interacting atoms in box
• Potential is 3D lattice
• Isosurface for small -ve potential
• User selects endpoints via dials
• Ruler interpolates potential along path
  • outputs 1D lattice to NAGgraph
  • outputs geometry to Render
• PostScript output from NAGgraph (example)

Digital topography

• Height field obtained from satellite data
• Height is 2D lattice
• Displayed using LatToGeom
• User picks endpoints in Render
• Ruler interpolates heights along path
  • outputs 1D lattice to NAGgraph
  • outputs geometry to Render
• PostScript output from NAGgraph

Computational hydrodynamics

• Simulation of binary star
• Leaking gases form accretion disk
• Density and temperature are 3D lattices
  • density displayed as blue isosurface
  • temperature as orange isosurface
• Shows high-T jet normal to disk
• Ruler used to show T profile along jet