In GeoEye’s gallery are numerous high resolution images of locations across the globe. The Eastern Algerian portion of the Sahara is an otherworldly place, a region of great diversity with endless stretches of sand dunes and rocky platforms that can reach more than 2,000 meters. The Tassili n’Ajjer “Plateau of the Rivers” National Park is a vast plateau in southeast Algeria at the borders of Libya, Niger, and Mali, covering 72,000 square kilometers. Satellite Image Courtesy of GeoEye
Sicily’s Mount Etna is the largest active volcano in Europe and the most well-known. Yesterday it burst forth with quite a fireworks display overnight.
The eruption wasn’t as strong as previous bursts, but it lasted for a longer period of time than previous ones.
Autodesk Labs has just released Interactive Terrain Shaping for AutoCAD Civil 3D 2012. This technology preview provides users with a workflow for developing grading proposals in Civil 3D 2012. Users will be able to interactively explore and create new conceptual grading plans.
John Snow created a map of a cholera outbreak in the district of Soho, London in 1854, which helped to convince authorities that the disease was caused by water ( in particular, it originated from one pump in Broad Street). The CartoDB platform allows you to map data and develop location aware applications very easily. This example of John Snow’s Cholera Map of London presented with CartoDB demonstrates how CartoDB can quickly combine different data types, then display them on a map.
The Denver area has become a center of satellite imagery providers in recent years. Proposed steep cuts in the U.S. Department of Defense budget could affect satellite-imagery providers DigitalGlobe, headquartered in Longmont, and GeoEye,based in Virginia with a processing and operations center in Thornton. Combined, the companies have about 1,200 employees.
President Obama’s closing words to young scientists at today’s Science Fair held at the White House: “I’m proud of you. Keep up the good work. And don’t let any of those robots wander too far.”
Scholars are having trouble measuring the world’s largest cities – largely because the terms the cities are measured by differ from place to place. They have come up with a total of 30 largest cities in the world.
Richard Greene, associate professor of geography at Northern Illinois University in the United States, says even the most authoritative list, from the UN, “compares apples with pears”.
For those who have made any changes to the default raster type, you will probably want to save your changes. This way you can re-use your custom raster type if you want to load additional raster data with the same properties and functions.
To save your custom raster type, click on the General tab. At the bottom of this tab, you will see a Save As button. Click the Save As button, and save it in the location where you keep all your custom raster types.