Qgis Udig and Postgis

Until comparatively recently visualisation of geographical information tended to mean one thing. ArcView. When Google Earth (and the perhaps under rated and certainly under used NASA Worldwind) appeared on the scene visualisation of free geographical information became popular and ubiquitous. Three dimensional spinning globes revolutionized the way none GIS professionals could work with geographical data.…

Population density and deforestation

An element of spatial analysis that can be both fascinating and frustrating involves resolving the tension between the attraction of visual pattern matching and the formality of statistical analysis. Traditional non spatial statistics in an observational setting relies heavily on correlation analysis. This alone can be uninformative, misleading and often confusing. Modern spatial statistics that…

Little Blue Heron

The Little Blue heron (Egreta caeurulea) is, as its scientific name suggests, a form of egret. Like other egrets it tends to walk when feeding rather than standing patiently in one spot as would a typical heron. Juveniles are white and easily confused with the Snowy Egret. This individual is feeding on small carp in…

Northern flicker

There are four groups of the Northern Flicker (Colaptes auratus). This is the southernmost sub species, Colaptes auratus mexicanoides (sometimes known as the Guatemalan Flicker). It is a typical woodpecker in many ways and uses old, decaying trees for food and nesting sites. However the species also spends a surprising amount of time on the…

Code 9

During the holiday Mickey and I have been watching a program called brainbox challenge on the BBC. Neither of us can keep up with any of the competitors, although Mickey sometimes beats them to it on the memory games. One of the games is called code 9. The rules are (fairly) simple. The competitors are…