Armando B. Mendes

Introduction to Diagrams

Posted by Armando Brito Mendes | Filed under ARS - SNA, Investigação Operacional, videos, visualização

Uma bela introdução aos grafos

Diagrams are everywhere — from the established conventions of highway signs to the newly emerging visualizations appearing on social networking websites. Most people have a personal experience of diagrams whether drawing directions or figuring out how to operate a new computer. Yet very few people are familiar with how we read or construct diagrams.

This short film introduces the language of diagrams and their role in visual thinking and communication. As only a film can do, it reveals the vocabulary “in the wild” and in the context of making and using diagrams.

Tags: ARS\SNA intro, definição

Read more | Comments off | December 17th, 2012

UK Economic and Social Data Service

Posted by Armando Brito Mendes | Filed under data sets, estatística

Bom site com muitos dados oficiais do Reino Unido

Tags: inquéritos

Read more | Comments off | December 7th, 2012

Guide to Maps and Mapping

Posted by Armando Brito Mendes | Filed under visualização

Colecção de links sobre mapas

Cartography is the study of creating maps. Cartographers are both artists and scientists who create those maps. Most maps relate spatial information two-dimensionally in order to communicate location, other geographic themes or information. Physical maps can be either flat, spherical like a globe, or digital.

There are two basic kinds of locational maps: topographic and topological. Topographic maps are produced to a standard scale, while topological maps are not. Maps have always been used to aid travelers regarding location. As information science and the need for a new way to disseminate information grew, mapping began to include themes. Dot maps for instance depict storm damage in a certain location, or how much soybean is produced in a certain state. The main purpose is to make the map meaningful to its user by keeping to a standardsymbology or legend, so that the map regardless of type, conveys the information necessary to the user who deems it valuable.

Tags: mapas, SIG

Read more | Comments off | November 30th, 2012

Visualização de dados FIFA

Posted by Armando Brito Mendes | Filed under visualização

visualizacao de BDs da FIFA sobre projetos de apoio ao futebol

Studio NAND and Moritz Stefaner, along with Jens Franke explore FIFA development programs around the world.

The FIFA Development Globe visualises FIFA’s worldwide involvement in supporting football through educational and infrastructural projects. Using a 3D globe in combination with interconnected interface and visualization elements, the application provides multiple perspectives onto an enormous dataset of FIFA’s activities, grouped by technical support, performance activities, and development projects.

The globe itself is an icosahedron, or essentially a spherical shape made up of triangles. Triangles in each country represent programs and are colored by the three above categories, and you might recognize Moritz’ elastic lists in the sidebar to filter through programs, by country, organization, and type. There’s also a timeline view, which shows program development over the past five years.

Give it a go here. I should warn you though that it runs in Flash (a client requirement), and it could run sluggish depending on your machine. Sometimes I was disorientated by the interaction and animation, especially when I clicked and nothing happened until a few seconds later.

FlowingData

Tags: análise de dados, Estat Descritiva, mapas

Read more | Comments off | November 30th, 2012

Projeto portugues de análise de text mining

Posted by Armando Brito Mendes | Filed under ARS - SNA

um interessante projeto pt de text mining

redes de relações entre entidades: O Mundo Visto Daqui

Nuvem de palavras mais frequentes: Bubble Cloud

Tags: ARS\SNA applicações, data mining, facebook, text mining

Read more | Comments off | November 16th, 2012

Easy web applications in R

Posted by Armando Brito Mendes | Filed under estatística, software

criar aplicações com R - deployment de modelos e análises

Shiny makes it super simple for R users like you to turn analyses into interactive web applications that anyone can use. Let your users choose input parameters using friendly controls like sliders, drop-downs, and text fields. Easily incorporate any number of outputs like plots, tables, and summaries.

No HTML or JavaScript knowledge is necessary. If you have some experience with R, you’re just minutes away from combining the statistical power of R with the simplicity of a web page.

Tags: análise de dados, data mining, desnvolvimento de software, R-software, software estatístico

Read more | Comments off | November 15th, 2012