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Tree Ring Reading

by 4004
& the study of the history of climatic and environmental changes of a geographical region based on the interpretation of the annual growth rings in the trunks of trees

June 2008

JS tree

by vrossign
create, rename, reorder, move, and delete node

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May 2008

JavaScript Information Visualization Toolkit (JIT) at noumena

by julie

The JIT is an advanced JavaScript infovis toolkit that was based on 5 papers regarding different information visualization techniques. The JIT implements advanced features of information visualization like Treemaps (with the slice and dice and squarified methods), an adapted visualization of trees based on the Spacetree, a focus+context technique to lay Hyperbolic Trees, and a radial layout of trees with advanced animations (RGraph).

April 2008

March 2008

jQuery File Tree

by camel & 1 other
jQuery File Tree is a configurable, AJAX file browser plugin for jQuery. You can create a customized, fully-interactive file tree with as little as one line of JavaScript code.

February 2008

January 2008

December 2007

October 2007

LDAP Schema Design

by ogrisel
It is possible to make one LDAP directory serve many applications in an organisation. This has the advantage of reducing the effort required to maintain the data, but it does mean that the design must be thought out very carefully before implementation starts. LDAP directories are structured as a tree of entries, where each entry consists of a set of attribute-value pairs describing one object. The objects are often people, organisations, and departments, but can be anything at all. Schema is the term used to describe the shape of the directory and the rules that govern its content. A hypothetical organisation is described, with requirements for “white pages” directory service as well as a wide range of authentication, authorisation, and application-specific directory needs. The issues arising from the LDAP standards are discussed, along with the problems of maintaining compatibility with a range of existing LDAP clients. A plan is proposed for the layout of the directory tree, with particular emphasis on avoiding the need to re-organise it later. This involves careful separation of the data describing people, departments, groups, and application-specific objects. A simple approach to entry design is shown, based on the use of locally-defined auxiliary object classes. The effects of schema design on lookup performance are discussed. Some design tricks and pitfalls are presented, based on recent consulting experience.

September 2007

August 2007

July 2007

Implementing an N-Level Nested Tree In PHP and PostgreSQL

by kanjar & 1 other
This series of articles is about implementing a nested tree using PHP and PostgreSQL. The theory and code in these articles also applies to MySQL, not just PostgreSQL.

June 2007

May 2007

March 2007

Neatorama » Blog Archive » 10 Most Magnificent Trees in the World.

by sbrothier

A tree is a wonderful living organism which gives shelter, food, warmth and protection to all living things. It even gives shade to those who wield an axe to cut it down

Buddha.

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