Regres -- Linear regression analysis tool

Overview

Regres is a linear regression analysis tool developed using the ncurses library. It allows users to perform linear regression analysis using the least squares method, visualize data, and conduct statistical analysis in a terminal-based user interface (TUI).

History

It was initially developed during the laboratory practices for various first-year Physics courses at the University of Salamanca (Spain) in 2002. It quickly became an essential tool for many students. The first version was created in a rudimentary format for DOS, while the third iteration introduced graphical representation capabilities using an SVGA controller (BGI). That code still exists, but it's not public.

This current version is a simplified edition, as it does not allow data editing (yet) nor does it account for multiple measurements for the same value as previous versions. However, it has finally been adapted for Linux, featuring a menu interface built with ncurses.

Version

• Current: version 4.1.2 (with further improvements yet to come)

Features

• Data input and storage
• Load and save datasets from files
• Visualize data through plotting (using gnuplot)
• Display statistical information
• Perform linear regression analysis

Requirements

• C compiler compliant with the ISO/IEC 9899:1999 standard (C99): gcc, clang, etc.
• ncurses library
• gnuplot [optional], but the plotting option invokes gnuplot

Installation

1. Clone the repository

$ git clone https://github.com/jacorbal/regres.git
$ cd regres

2. Compile the program

$ make

3. Run the program

$ cp ./bin/main ~/.local/bin/regres
$ regres

Usage

• Input data, Select Input new data from the main menu to input your dataset.
• Load data. Select Load data from file to load a previously saved dataset.
• Save data. Select Save current data or Save as to store your dataset.
• Perform analysis.
  • Select Statistics to view statistical information about your dataset.
  • Select Linear regression to perform linear regression analysis.
• Plot data. Select Plot graph to visualize your data and regression line by invoking gnuplot.
• About. Select About to view information about the program.
• Quit. Select Quit to exit the program, with confirmation for unsaved changes.

License

• This project is licensed under the MIT License.
• See the LICENSE file for details.
• Copyright (c) 2002-2025, J. A. Corbal

Contributing

Contributions are welcome. Feel free to submit a pull request or open an issue to discuss improvements or suggestions. Take into consideration that the development of this program is still ongoing.