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https://github.com/adelks/zegrapher

2D Math and Data plotter.
https://github.com/adelks/zegrapher

2d curves math math-functions parametric-equation plot sequences

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2D Math and Data plotter.

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README 

        
![ZeGrapher logo with name](ZeGrapher_named_logo.svg)



[![Build Status](https://travis-ci.org/AdelKS/ZeGrapher.svg?branch=master)](https://travis-ci.org/AdelKS/ZeGrapher)

[![Gitter](https://badges.gitter.im/ZeGrapher/community.svg)](https://gitter.im/ZeGrapher/community?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge)



![ZeGrapher example](https://zegrapher.com/screenshots/index.png)



ZeGrapher is a free, open source and easy to use software for plotting mathematical objects. It can plot functions, sequences, parametric equations and data on the plane.



**Official website:** [https://zegrapher.com/](https://zegrapher.com/)



------------------------------------



### Features



ZeGrapher is in a deep rework stage, the features described here may still not be implemented.



- Visualize functions by giving their "natural" equations (e.g. `f(x) = 2+cos(x)`)

  - All the standard mathematical functions (`cos` `cosh` `exp` ...etc) can be used.

  - Any user defined function can be used.

  - Planned: compute derivatives and integrals.

- Visualize numerical sequences through specific equations

  - Defined by giving a list of expressions separated with `,` or `;`

  - The last expression is the "generic" expression that is used for any other index that the first values.

  - If more than one expression is provided, the first expressions are considered as the first values of the sequence

  - Example: Fibonacci sequence `u(n) = 0 ; 1 ; u(n-2) + u(n-2)`

    - First values: `0`, `1`

    - Generic expression: `u(n-2) + u(n-1)`

- Can define "global constants", i.e. a variable that has an explicit numeric value without depending on any other object

  - Example `pi = 3.14`

  - Can be used for parametric plots of functions, sequences and parametric equations.

- Can define "global variables", i.e. a function without input variables that can arbitrarily depend on other objects.

- Plotting of 2D data

  - Polynomial fitting (regression).

  - Data can be imported from/exported to a CSV file.

- Extensive tools for precise exporting

  - Image (`png`, `jpeg`, `tiff`, `gif`...) and scalable (`svg`, `pdf`) formats

  - Preview the graph exactly how it will look once exported

    - Set sizes in centimeter or in pixels

    - A global scaling factor is offered to change the DPI

    - Move the graph within the page

- Navigate on the graph :

  - Select a curve to display the coordinates of its points.

  - Zoom/unzoom on each axis separately, around the mouse (with the scroll wheel), or fit on a mouse drawn rectangle.

  - Move the graph.

- Customization/visualization

  - Linear and logarithmic scales

    - Can be set independently for `x` and `y` axes.

  - Can change the grid ticks to be multiples of a given variable/value

    - e.g. multiples of `π`

  - Change colors: axes, background, functions...

  - Adjust the plotting precision.

    - Note that it will also affect rendering speed.

  - Show/hide the grid

  - Show/hide the subgrid.

    - user set number of subdivisions

  - Activate/deactivate curves\' smoothing.

  - Plot the graph on an orthonormal basis.

------------------------------------------

### Download

ZeGrapher is available in the official repositories of Debian, Fedora, Ubuntu, FreeBSD. In the Archlinux (AUR). An [AppImage](https://appimage.org/) is otherwise available, along with Windows and Mac versions in Zegrapher's [Github releases page](https://github.com/AdelKS/ZeGrapher/releases) or at [zegrapher.com](https://zegrapher.com/).



### Compile from sources

To compile from sources, ZeGrapher needs the following tools and libraries:

- C++ compiler: [clang](https://clang.llvm.org/) or [gcc](https://gcc.gnu.org/)

- [boost](https://www.boost.org/)

- [Qt](https://www.qt.io)

- [meson](mesonbuild.com)



To build

```shell

$ meson setup build

$ cd build

$ meson compile

$ cd ..

```

This creates the `ZeGrapher` executable in `build/src/ZeGrapher` that you can directly run.



###### Packaging



- Linux

  - `meson install` should now be fully XDG compliant. Issues and/PRs welcome if something is missing.

  - Use [deploy/linux-bundle-appimage.sh](./deploy/linux-bundle-appimage.sh) to create an [AppImage](https://appimage.org/).

- macOS

  - Use [deploy/macos-bundle-dmg.sh](deploy/macos-bundle-dmg.sh) to create an installer.

- Windows

  - _TODO_