Two Dimensional

Venn diagrams are an interesting method for rendering triadic relations on a two dimensional drawing surface. Certain marks (or annotations) indicate the existence of variables or constants in the distinguishable regions. Platforms: Windows, Mac, Linux

XDrawChem is a two-dimensional molecule drawing program. It is similar in functionality to other molecule drawing programs such as ChemDraw (TM, CambridgeSoft). It can read and write MDL Molfiles, and read ChemDraw text and binary files, to allow sharing between XDrawChem and other chemistry... Platforms: Windows, Mac, *nix, C/C++, BSD Solaris

PCSA is a frequency domain analysis technique that can be used to transform PSDs (as those in a spectrogram) to the form of a two-dimensional histogram with frequency-magnitude bins. PCSA can be used to examine the spectral characteristics of a long period of data. It summarizes magnitudes and... Platforms: Matlab

Input data is the MS Excel file, where the table of nodes, table of elements, nodal external loads vector and boundary conditions are stored.After running the mabs2d.m file on the Command Window, the program calculates the stiffness matrix in local coordinates kiL (element i). Once the... Platforms: Matlab

MAxSym is a MATLAB tool for the simulation of two-dimensional, non-uniform, axi-symmetric groundwater flow in saturated, porous media. MAxSym solves the governing partial differential equation using a finite-difference approach (Louwyck et al., in press). The model is axi-symmetric, which means... Platforms: Matlab

libdmtx is an open-source library for reading and writing Data Matrix barcodes, two-dimensional symbols that hold a dense pattern of data with built-in error correction. This module provides a PHP wrapper API enabling Drupal developers to make use of libdmtx's matrix code encoding/decoding... Platforms: PHP

This simulation offers beginning students practice in two-dimensional vector addition. It is relatively simple, as the x and y components of each vector are integers. Given the magnitude and direction of two vectors, students must determine the x and y components, the length of each, and the... Platforms: Mac

This interactive simulation shows an airplane flying at constant horizontal velocity preparing to drop relief supplies to a small island. As captain of the plane, the student must first calculate the release point for dropping the package. As the simulation runs, press the red "+" button at the... Platforms: Mac

The Orbits Within Spherical Galaxies model displays the two-dimensional trajectories of particles (stars) within a galaxy having a spherically symmetric mass distribution that heuristically approximates the distributions found in galaxies and bulges. The model uses a mass density proposed by... Platforms: Mac

This simulation gives students a chance to practice two-dimensional vector addition in an interactive format with immediate feedback. The magnitude and direction of two vectors are given; the students' task is to determine x and y components, length of the two vectors, and the resultant sum.... Platforms: Mac

The EJS Ideal Gas Expansion model simulates a two-dimensional ideal gas in a square box. This simulation can be used as part of the activity described in "The Statistical Interpretation of Entropy: An Activity" by Todd Timberlake, to be published in The Physics Teacher. In the model, the... Platforms: Mac

The QM Probability 2D program displays the time evolution of the two-dimensional probability density using color to represent its magnitude. The default wave function is a two-state superposition in the x (nx = 1,2) and y dimension (ny = 3,4) state in an infinite square well. Additional states... Platforms: Mac

The Lennard-Jones PVT System simulates a two-dimensional system of particles confined between a thermal reservoir and a piston. This computer model is designed to study the equation of state for particles interacting via a simple but realistic molecular potential that has a weak long-range... Platforms: Mac

The Hard Disk PVT System simulates a two-dimensional system of particles confined between a thermal reservoir and a piston. This computer model is designed to study the equation of state for hard disks without other interactions. Slow-moving particles are color-coded as blue and fast particles... Platforms: Mac

Tissue Simulation Toolkit is a two-dimensional library for the Cellular Potts Model (Graner and Glazier 1992; Phys. Rev. Lett. 69, 2013), which is increasingly used by computational biologists to study tissue patterning and developmental mechanisms. Features . Solved some minor problems... Platforms: *nix

HydroSed2D is a two-dimensional numerical model for hydrodynamics and sediment transport on unstructured mesh. Platforms: *nix

54321 project consists of five games in four, three, and two dimensions for one player. 54321 takes five classic two-dimensional puzzle games and extends them into three and four dimensions. 54321 was created for the 1mb SDL Game Programming Contest sponsored by Linux Journal, Loki Software,... Platforms: *nix

In this simulation, you can investigate the electric force that a charged particle experiences in a two-dimensional situation, because of four other nearby charged particles. The net electric force is shown as an arrow attached to the particle. Note that each particle can be dragged around the... Platforms: Mac

Zam module contains "array" and "matrix". An array is 1D list with fixed sized and mutable internals. A  matrix is the same except for the fact that it is 2D. This module provides two classes that emulate one and two dimentional lists with fixed sizes but mutable internals. Platforms: Windows, Mac, *nix, Python, BSD Solaris

Insert Retrieve data from Table can be used to execute MySQL database queries to insert and retrieve data from table records. It can insert a record in a table given an array of fields and the respective values.Insert Retrieve data from Table can check if there is already duplicated record giving... Platforms: PHP