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Tag Archives: visualization

Tools and libraries for visualization

Here are some tools and libraries that can be used in our project.

TileMill is a free application for making maps and visualization of geospatial data.

TileMill: Adding data from Development Seed on Vimeo.

Such visualization is possible to make with d3.js library. It can be used for visualization of bibliographic coupling for example.

 

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Visual Analytics – Slides

In the seminar phase I considered theoretical bases of Visual Analytics and those aspects of it, which will be applied in our project. In particular: geospatial and time factor visualization, plagiarism visualization, social networks visualization, visualization of scientific collaboration, perception and cognitive aspects. Additionally, I offered some ideas on what can be implemented during the project group.

 

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Time Series Visualization with Cube

Today I stumbled upon Cube, an Open Source system for visualizing time series data. The system is based on Node.js, MongoDB and D3.js. The developers of the “half-baked but still tasty” tool describe Cube as:

an open-source system for visualizing time series data, built on MongoDB, Node and D3. If you send Cube timestamped events (with optional structured data), you can easily build realtime visualizations of aggregate metrics for internal dashboards. Cube speaks WebSockets for low-latency, asynchronous input and output: new events are streamed in, and requested metrics are streamed out as they are computed. (You can also POST events to Cube, if that’s your thing, and collectd integration is included!) Metrics are cached in capped collections, and simple reductions such as sum and max use pyramidal aggregation to improve performance. Visualizations are generated client-side and assembled into dashboards with a few mouse clicks.

They also share a video on building an analytical dashboard in 60 seconds (the video is actually only 31 seconds long though), which shows the capabilities and speed of Cube.

I think it could be a strong candidate for future implementation in the project group. What do you think?

 

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HTML5 and CSS3 Readiness

It show a cool graphical visualization of HTML5 and CSS3 readiness in most of the major browsers we use.

I guess the technology used for visualization could  of interest to those who are working in “data visualization”

To see the visualization open this link: http://html5readiness.com/
html5cssreadiness

 
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Posted by on 27.11.2011 in html5, Visualization

 

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ThemeRiver™ concept explained

The following excerpt is taken from Pacific Northwest National Laboratory‘s website.

ThemeRiver™

Concept

ThemeRiverThe ThemeRiver™ visualization helps users identify time-related patterns, trends, and relationships across a large collection of documents. The themes in the collection are represented by a “river” that flows left to right through time. The river widens or narrows to depict changes in the collective strength of selected themes in the underlying documents. Individual themes are represented as colored “currents” flowing within the river. The theme currents narrow or widen to indicate changes in individual theme strength at any point in time.

An explanatory video:

The papers:

  • “ThemeRiver*:: In Search of Trends, Patterns, and Relationships” and
  • “ThemeRiver: Visualizing Theme Changes over Time”

are uploaded under pgpushpin’s documents at Mendeley.

 

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Seminar Topic: Trend Detection and Visualization & Search

Introduction

This topic is divided into 3 parts viz.

1. Trend detection in numbers:

More: Moving average and its classification, predictive analysis and forecasts, visualization.
Example: Stock markets
Useful tool(s): MS Excel
Prototype: Yes.

2. Trend detection in text:

More: Term document matrix, comparisons, how can we achieve it, mathematical models, can we use Java/C#, visualizations, ThemeRiver.
Prototype: No.

3. Custom Search Applications:

More: Apache Solr, web services, semantic search, possible linked data extensions.
Prototype: Yes.

So far:
Currently I am reading whatever I come across about Trend detection. I am also learning various techniques with MS Excel. I have added a few papers those I found useful to Dropbox(links provided below).

Access e-books at Dropbox and papers at Mendeley in folder “Trend Detection” under PG PUSHPIN group.

 

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My topic: Visual analytics

My task is to study existing approaches and solutions (tools) regarding data visualization, visual analytics and afterwards create a prototype (mockup) applying knowledge to the topics of our project.

Some subtopics and directions of study:

  • visualization of cooperation networks
  • spreading of ideas (flow visualization)
  • geospatial network visualization
  • time factor visualization
  • plagiarism visualization
  • diagrammatic reasoning
  • geospatial visualization + data mining

So far I’ve partly studied the book “Mastering the Information Age – Solving Problems with Visual Analytics”, papers: Muse: Visualizing the origins and connections of institutions based on co-authorship of publications, Interactive Exploration of Geospatial Network Visualization.

Tools and resources that I find interesting:

  • Gephi  – an open source tool for graph visualization
  • OECD – Organisation for Economic Co-operation and Development. They gather and present data about socio-economical and political situation in different countries.
  • Visual complexity – original ways of visualizing various data.
 

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