A collection of small utility programs to process geographic information and GPS data. Each program is written in Java and simple enough to be easy to understand. E.g. GTOPO30 to JPG, GLCC20 to JPG, GPX reader.
Ytk is a Tcl/Tk program which adds menus, buttons and features to the basic command line driven Yorick program and language. It also enables usage of all Tcl/Tk widgets and functions including buttons, sliders, checkboxes, and other typical TK widgets to