# surf: Visualization of algebraic curves, algebraic surfaces and hyperplane sections of surfaces¶

## Description¶

surf is a tool to visualize some real algebraic geometry: plane algebraic curves, algebraic surfaces and hyperplane sections of surfaces. surf is script driven and has (optionally) a nifty GUI using the Gtk widget set.

This is used by the Singular Jupyter kernel to produce 3D plots.

## License¶

GPL version 2 or later

## Upstream Contact¶

http://surf.sourceforge.net (although the project is essentially dead)

## Dependencies¶

cups (optional)

GNU flex Version 2.5 or higher

GTK+ Version 1.2.0 or higher (optional)

POSIX Threads

GNU MP(gmp) Version 2 or higher

lib-tiff

lib-jpeg

zlib

ps2pdf (optional)

This package is “experimental” because not all of these dependencies are packaged with Sage.

## Type¶

experimental

## Equivalent System Packages¶

opensuse:

```
$ sudo zypper install surf-alggeo
```

See https://repology.org/project/surf-alggeo/versions

However, these system packages will not be used for building Sage because spkg-configure.m4 has not been written for this package; see https://trac.sagemath.org/ticket/27330