phpEquations is a PHP class that can find the solutions of linear, polynomial, and trigonometric mathematical equations and systems. It takes a string with one or more equations and parses it to solve the equations. The solutions are returned as an associative array with the values of each equation variable. The class uses a variation of Newton's method with a special technique, called Blocking, to maximize speed by reducing a large problem into smaller problems with fewer variables. The time limit for running the algorithm, the number of variables, the number of iterations, and the iteration step are configurable parameters.
PHP Clarke and Wright Algorithm is a class that can solve a truck routing problem with the Clarke and Wright algorithm. It attempts to solve the problem of determining the routes by which a given number of trucks with different weight and volume capacity will be dispatching deliveries to a certain number of clients distributed geographically within certain time windows. The class takes as parameters the nodes of positions of each client, the demands of each client, a matrix of distance between nodes, and the capacity of each truck. It computes the route for each truck, as well the time and distance to drive to each customer and the volume and weight to transport.
make3_80-sh is a compatibility layer for GNU make 3.80. Starting with 3.81, GNU make treats backslash newlines in commands in a POSIX-compatible way. This breaks older Makefiles. make3_80-sh is a compatibility layer to use old Makefiles with GNU make 3.81. It also aids migration of such Makefiles.
SWATnalysis is a utility that runs the Soil and Water Assessment Tool (SWAT) and analyzes its output files. It converts archaically formatted SWAT output files into more user friendly CSV files, performs graphical analysis, calculates area weighted precipitation values, and performs statistical analysis of observed data versus simulated data.
Open School Admin (OSA) is a Web-based school administration system primarily focused on ease of use and access to school information. It has been in continuous use and development for the past 7 years. It manages all aspects of school administration: student enrollment, class scheduling, mark reporting, attendance, user accounts, and room booking. Through the use of various plugins, it also manages email announcements (including automated attendance notices), government reporting, dorm room management, Alumni relations, etc. It is a standalone application written using a Perl/MySQL back end. It requires a Web server (Apache/Lighttpd tested) and should run out of the box on any Unix system. While OSA itself is very mature, the installation and setup is still a young and evolving process.
lindyFrame is a desktop application framework which eliminates the development time needed to create software tools. The framework provides the ability to create applications which support several languages and loading resources from network sources. The core aspect of the tool is a plugin architecture which the developer uses to build the desired functionality in the desktop application. Multiple plugins can be created and loaded which will operate in their own individual threaded environments.
G-Code Ripper reads g-code, scales, and rotates and/or splits the tool paths before outputting the modified tool path data to a new g-code file. It evaluates g-code expressions and parameters and interprets YZ and ZX arcs. YZ and ZX arcs are internally converted to linear motions for compatibility with splitting and rotation.