Free visualizing software for linux

Chaos Visualization is a program for quickly calculating the amount of predictability in a very simple system: a spring with one side connected to the origin and the other to a weight under gravity.

This amount is chaos is visualized in TIFF images, which can be put in a sequence to show the evolution of chaotic behaviour in this system.

VisLib is a GTK application for visualizing, editing, and searching hierarchically-organized couples of visual and textual information, from family or holiday photographs, desktop backgrounds, digital comics, to material samples or bacterial cultures photographs.
Enhancements:
- Record and category edition works. File saving in VLB-1 format works.
- Categories and record reordering tools were added and work.
- The edit menu has been completed.
- The full loop between file creation, filling, edition and saving is operational.

Visual Automata Simulator is a tool for simulating, visualizing and transforming finite state automata and Turing Machines.
Visual Automata Simulator is a DFA, NFA and TM simulator.
Main features:
- Creates, simulates and transforms DFA and NFA machines
- Creates and simulates TM
- Batch tests for TM: useful features to test a bunch of files quickly!
- Easy-to-use GUI interface (multi-documents)
- Smart links between objects
- Machines can be drawn using the mouse - and resized at any time
- Multiple machines can be created in a single document
- Multiple documents can be opened at the same time
- Documents can be saved and reloaded from disk
- Debug mode to see exactly how the machine is working (each step has a different color)
- MacOS X GUI compliant.
Enhancements:
- FA and TM machine can be exported to EPS file
- integrated update manager
- preferences: can specify the character used to define an epsilon transition
- fixed a bug where epsilon transition were not considered when starting directly from a state instead of following a non-epsilon transition.

Filelight creates an interactive map of concentric segmented-rings that helps visualize disk usage on your computer.

It is like a pie-chart, but the segments nest, allowing you to see not only which directories take up all your space, but which directories and files inside those directories are the real culprits.

Remote Filesystems

If you want to have a filelight-style map prerendered at set times during the week, and then controlled in a web browser, take a look at Philesight, an excellent utilty that is also open source.

You can also browser remote servers using the fish:// or ftp:// KIO slave inside FIlelight, but for a system administrator I think philesight is more useful, check it out.

Installing From Source

You should be able to just copy and paste the following into a terminal:

cd ~
wget http://methylblue.com/filelight/packages/filelight-1.0.tar.bz2
tar xjf filelight-1.0.tar.bz2
cd filelight-1.0
./configure --disable-debug && make
su -c make install

Pascals Triangle 3D is a Java3d project which prints pascals triangle using both a recursive and iterative algorithm.

A friend needed a software to print pascals triangle using both a recursive and iterative algorithm. So I helped him with the code.

But then we got the idea to create a program to visualize the triangle in 3D. Well, hours of perusing Java3D documentation ensued (neither of us having ever before done anything in 3D).

The result, a hacked up version of several java3d examples that lets you rotate the triangle with your mouse and zoom in and out with keyboard.

qvsgraph is a tool to visualize qmail-scanner results. qvsgraph project mainly consists of two PHP scripts.

One is used to fill the results into a MySQL database, and the other one generates nice graphical statistics and outputs images in PNG format which are highly configurable.

ies2iv project opens an IESNA file and translates it to the Open Inventor format in order to represent it in 3D and visualize it with software like ivview.

Usage:

ies2iv [--help | -h] [-t] [-p] < file1 > [file2...]

ies2iv: exports one or several IES files to Open Inventor file format
-p: number of horizontal slices
-t: number of vertical slices
-i : exports the corresponding igloo

Overslack is a slackline simulator/game. A configurable model world containing a slackline, a slacker and ground is visualized and its time evolution is calculated while the user controls the slacker using the mouse. Just like with real slacklining there is no predefined goal, but it keeps track of the time you stand on the line.

The simulated world has only two dimensions. Although the forward direction offers many possibilities on a real slackline, it has very little to do with balancing and is quite uninteresting to simulate. Slow speeds are assumed, so the air resistance is neglected. The time evolution is calculated by applying Newtonian physics numerically as many times per second as the machine can handle.

The speed of the simulated world is configurable, making it run five times as slow as the real world makes it slow enough to be manageable and fast enough to keep the attention up. Unlike normal grass ground, the ground in the simulation is bouncy and doesnt cause injuries. It is (unfortunately) a bit unrealistic, but makes it more fun.

The simulated line behaves according to a quite simple model. An ideal spring between the lines point of equilibrium and the slackers feet makes a good approximation, but an ideal spring gives back all energy it stores, which would cause you to bounce forever without helping with your legs. To simulate some friction, it has a somewhat different spring constant depending on whether its extending or compressing. It is of course fully configurable, so anything from an ideal spring to an old, tired and non-elastic line are possible to simulate.

The slacker is controlled with the mouse. Move the mouse down to extend the legs, and move it up to crouch. Move the mouse to the right to lower your right arm and raise your left, and to the left to do the opposite. This is pretty much all you can do on a real slackline too, except that you can move more than just your arms, but thats just a question of terminology.

The slacker is infinitely fast and strong, if you move the mouse the slacker will move instantly to the new position regardless of the force and energy required.
It is possible to jump off the line and land on it again, with or without bouncing on the ground in between, but to make it simpler the slacker is moved to a perfectly balanced position whenever you press the right mouse button.

In addition to the line, slacker and some on-screen numerical physical information, vectors visualizing location (white), speed (green) and acceleration (red), both translational and rotational, are shown.