In this tutorial we will use some images, CSS and jQuery to create the effect of a rotating billboard with two ads. The idea is to make one set of image slices disappear while another one (the other ad) appear. We will decrease the width of each disappearing slice and increase the width of each appearing slice. This will give the effect of rotating slices, just like in a rotating billboard system.

Myriahedral projections are a new class of methods for mapping the earth. The globe is projected on a myriahedron, a polyhedron with a very large number of faces. Next, this polyhedron is cut open and unfolded. The resulting maps have a large number of interrupts, but are (almost) conformal and conserve areas. A general approach is presented to decide where to cut the globe, followed by three different types of solution. These follow from the use of meshes based on the standard graticule, the use of recursively subdivided polyhedra and meshes derived from the geography of the earth. A number of examples are presented, including maps for tutorial purposes, optimal foldouts of Platonic solids, and a map of the coastline of the earth.

a tutorial on writing web application with the Pinax framework edit

Writing a development tutorial requires a few more considerations in comparing to writing a regular article. Readers would have to follow the steps, read code, view demos or examine a picture explaining some feature. Here are several tips that might help you write more efficient tutorials.

Before starting with Haystack, you will want to choose a search backend to get started. There is a quick-start guide to Installing Search Engines, though you may want to defer to each engine’s official instructions.