Tonne Software

The great-circle mapping program





This program allows both great-circle (polar) and rectangular projections of the world. The great-circle map is centered on any specified latitude and longitude (the "home" location). The rectangular projection is shown with the home longitude in the middle of the screen.

The extensive database of cities and countries was upgraded by Vince Grgic, S52CC, and thanks are extended to him for his considerable effort! If you have modified that database yourself, be sure to archive it and add your changes to Vince's version. Better yet, tell either of us about any changes so they may be incorporated into the program.

Current version of Pizza is 2.13; size is 2.7 MB




Polar plot
Polar plot

Rectangular plot
Rectangular plot