visualization

What techniques exists in R to visualize a "distance matrix" ?

Hi all, I wish to present a distance matrix in an article I am writing, and I am looking for good visualization for it. So far I came across balloon plots (I used it here, but I don't think it will work in this case), heatmaps (here is a nice example, but they don't allow to present the numbers in the table, correct me if I am wrong. ...

How do I get tags/keywords from a webpage/feed?

I have to build a tag cloud out of a webpage/feed. Once you get the word frequency table of tags, it's easy to build the tagcloud. But my doubt is how do I retrieve the tags/keywords from the webpage/feed? This is what I'm doing now: Get the content -> strip HTML -> split them with \s\n\t(space,newline,tab) -> Keyword list But this d...

How to write a web based music visualizer?

I'm trying to find the best approach to build a music visualizer to run in a browser over the web. Unity3D is an option, but I'll need to build a custom audio import/analysis plugin to get the end user's sound output. Quartz does what I need but only runs on Mac/Safari. WebGL seems not ready. Raphael is mainly 2D, and there's still the i...

Google chart display problem

Can you point out what is wrong in following query? (Please copy and paste URL) http://chart.apis.google.com/chart?cht=p3&chs=550x200&chd=t:970,134,57,28,51,11,6&chl=Instant(970)|Below1Min(134)|Above1MinandBelow5Min(57)|Above5MinandBelow10Min(28)|Above10MinandBelow30Min(51)|Above30MinandBelow1Hr(11)|Above1HrsandBelow3Hrs(6) ...

Simple visualizations/drawings in ASP.NET

I want to generate simple drawings in my asp.net website based on some data I deal with in this application (I want to represent structure of Neural Networks). I know about existing System.Drawing namespace but Im curious if there are solutions more appropriate for asp.net. It would be great if such visualization could be interactive (e...

Moving a camera along a path in KML

Hi, I'm trying to generate KML(using JAK) that will contain first person perspective animation from my GPS data. So I have collection of points (long, lat) sorted by timestamps and I would like to iterate over it and crate series of <gx:FlyTo> nodes. Unfortunately camera doesn't move as I expected :(. My current algorithm: find beari...

Music Visualization

Hi, I am intrested in learning about Music Visualization. (eg: http://en.wikipedia.org/wiki/Music_visualization ) Does anyone have any books to recommend on the subject? (I know its not a technical question, but it seems like a good place to ask) Many thanks ...

Is there a Visual studio plugin for visualizing red-green time for a TDD session ?

I read a post by Joshua Kerievsky about 'Limited Red Time' Link His org. Industrial Logic as part of a training module, has a screen where you upload an archive. In return, the screen shows you a graph of how much time were you in the red state vs the green state. It also hooks up with Resharper and annotates points at which the specif...

How can I visualize Fortran (90 or later) source code, e.g. using Graphviz?

I've been thrown into a large Fortran project with a large number of source files. I need to contribute to this project and it would seem prudent that I first understand the source. As a first step, I'd like to visualize the interdependences between the various source files, i.e. which source files need which modules. As far as I can t...

wireit: visualizing a directed graph with nodes that can contain nested graphs

Problem: There appear to be many tools for visualizing graph structures, but none of the ones I've seen so far seem to have the feature of "nesting". The WireIt library (apparently inspired by Yahoo Pipes) looks very promising, but it seems to lack this concept of nesting. To explain what I am thinking of, consider a Company Org Chart ...

Vector/SVG data of World / Country Boundaries?

I'm developing an OpenGL application. I need to have a model of planet earth spinning around (with the waters in blue, the land in green). My question is not dealing with the OpenGL / graphics ... but with the data. Where can I get this data? (Of the boundaries of the various countries). Bonus points if you also know where I can get ele...

Visualize high dimensional field arrows?

Hi, I have a big list of tuples (a, b), where both a and b are 9-dimensional vectors from the same space. This essentially encodes states of a system and some transitions. I would like to visualize the field described by these tuples, as arrows pointing from a->b, either in 2D or 3D. One of my problems however is that this is not a wel...

How to use GLUT/OpenGL to render to a file?

I have a program which simulates a physical system that changes over time. I want to, at predetermined intervals (say every 10 seconds) output a visualization of the state of the simulation to a file. I want to do it in such a way that it is easy to "turn the visualization off" and not output the visualization at all. I am looking at O...

Any easy performance data exploration programs?

I'm trying to optimize some software, so I generated a large volume of real world performance measurements - nothing fancy, just a few numbers describing the case plus time in milliseconds. I did some basic analysis on it - mostly dividing data into buckets in various ways and calculating bucket averages - and it was quite helpful in gi...

Import profile data into generic analysis and visualization tool

I have a mechanism for generating profile data of a couple of different types. Are there any tools that will import profile data from external sources and produce useful interactive visualizations? It seems like there are many profiling tools out there that all implement their own rendering engines, but there really isn't much difference...

How to display a blinking / flashing link in html

I am in need a link that will flash every 500 milleseconds, for a duration of 5 seconds... I remember long ago having a link like this, but deleted it because one could only click it when it was visible. Is there a workaround for that? ...

Are there any pre-written libraries/software to store and visualize point clouds?

Hi, I'm currently working on a motion capture 3d-scanning system, and I am generating a bunch of point clouds, each of which are somewhere between 9megs/file (storing around 600k points, with 4 integers, x-y-z-intensity, for each point). The cameras are capturing at 60 frames per second and currently, we are looking to capture something...

How would I visualize the amount of time that's passed between dates?

If I had a product and wanted to visualize the amount of time that has passed between releases of that product, what type of graph would I use? What I'm trying to show is the average amount of time that has passed between release cycles, as well as (approximately) how far through the current release cycle we currently are. The best I co...

Matplotlib autoscale

I need to get a plot that fits the data automatically using matplotlib. This is the code I was given: import matplotlib.pyplot as plt from matplotlib.collections import LineCollection .... lines = LineCollection(mpl.line_holder, colors=mpl.colorholder , linestyle='solid') plt.axes().add_collection(lines) plt.axes().set_aspect('equal', '...

Heatmap to Show Filesystem diffs on Server?

Hi, I've been tasked with creating a simple Python web-based app to graphically represent the "differences" between various servers, in terms of the contents of various key config files throughout the filesystem. 1. High Level Heatmap For a high-level overview, I was thinking of creating a heatmap of each system (e.g. http://www.jjguy...