Stimath

STIMATH is a high-level tool for mathematics, linear algebra, plotting and expression evaluation that can be used from any programming environment or even from a command line interface. It is an executable that takes a single argument, the name of a text file containing a series of MATLAB style expressions with virtually the full range of MATLAB expressions being supported. The output from processing the expressions can be written to files or used to generate plots.

Key Features: Mathematical functions for linear algebra, statistics, Fourier analysis, filtering, optimization, numerical integration and solving differential equations and boundary value problems. Matrix-based notation: Extensive graphics for visualizing data and tools for creating custom plots; Variables of any data type can be dynamically defined and used in expressions. Categories of Functions and Commands: Elementary Math; Trigonometry; Exponents and Logarithms; Complex Numbers; Discrete Math; Polynomials; Special Functions such as Bessel, Error, Gamma; Cartesian Coordinate System Conversion; Constants and Test Matrices; Matrix Operations such as dot, cross and transpose; Linear Equations; Matrix Decomposition; Eigenvalues and Singular Values; Matrix Functions and Analysis; Descriptive Statistics; Random Number Generation; 1D and Multidimensional Interpolation; Optimization; Numerical Integration and Ordinary Differential Equations; Boundary Value Problems; Delay Differential Equations; Partial Differential Equations; Numerical Integration and Differentiation; Fourier Analysis and Filtering; Sparse Matrix Creation and Manipulation Including Graphing and Tree Algorithms; Computational Geometry; 2-D and 3-D Plots; Volume Visualization; Array Creation and Concatenation; Indexing; Sorting and Reshaping Arrays; Arithmetic Operators; Relational Operators; Logical Operators; Set Operators; String Creation, Concatenation and Parsing; Time Series; Data Type Conversion and Identification; Functions for Processing Dates and Time; Data Import and Export.